#IFECompound(s)RNA source organismTitleMethodResolutionDate
17O7Y|1|A2 (rep)18S rRNAOryctolagus cuniculusRabbit 80S ribosome stalled close to the mutated SARS-CoV-2 slippery site by a pseudoknot (high resolution)ELECTRON MICROSCOPY2.22021-06-02
27OYD|1|918S rRNAOryctolagus cuniculusCryo-EM structure of a rabbit 80S ribosome with zebrafish Dap1bELECTRON MICROSCOPY2.32022-07-20
37O7Z|1|A218S rRNAOryctolagus cuniculusRabbit 80S ribosome stalled close to the mutated SARS-CoV-2 slippery site by a pseudoknot (classified for pseudoknot)ELECTRON MICROSCOPY2.42021-06-02
47JQB|1|ArRNAOryctolagus cuniculusSARS-CoV-2 Nsp1 and rabbit 40S ribosome complexELECTRON MICROSCOPY2.72020-12-02
57UCK|1|918S rRNAOryctolagus cuniculus80S translation initiation complex with ac4c(-1) mRNA and HarringtonineELECTRON MICROSCOPY2.82022-06-01
66SGC|1|A118S ribosomal RNAOryctolagus cuniculusRabbit 80S ribosome stalled on a poly(A) tailELECTRON MICROSCOPY2.82019-12-04
77TOR|1|A18S18S rRNAOryctolagus cuniculusMammalian 80S ribosome bound with the ALS/FTD-associated dipeptide repeat protein GR20ELECTRON MICROSCOPY2.92022-05-25
87O80|1|A218S rRNAOryctolagus cuniculusRabbit 80S ribosome in complex with eRF1 and ABCE1 stalled at the STOP codon in the mutated SARS-CoV-2 slippery siteELECTRON MICROSCOPY2.92021-06-02
97NWI|1|918S ribosomal RNAOryctolagus cuniculusMammalian pre-termination 80S ribosome with Empty-A site bound by Blasticidin SELECTRON MICROSCOPY3.132021-07-07
106YAL|1|218S ribosomal RNAOryctolagus cuniculusMammalian 48S late-stage initiation complex with beta-globin mRNAELECTRON MICROSCOPY32020-04-08
116R5Q|1|K18S ribosomal RNAOryctolagus cuniculusStructure of XBP1u-paused ribosome nascent chain complex (post-state)ELECTRON MICROSCOPY32019-07-10
127TOQ|1|A18S18S rRNAOryctolagus cuniculusMammalian 80S ribosome bound with the ALS/FTD-associated dipeptide repeat protein poly-PRELECTRON MICROSCOPY3.12022-05-25
137O81|1|A218S rRNAOryctolagus cuniculusRabbit 80S ribosome colliding in another ribosome stalled by the SARS-CoV-2 pseudoknotELECTRON MICROSCOPY3.12021-06-02
146ZVK|1|K318S RIBOSOMAL RNAOryctolagus cuniculusThe Halastavi arva virus (HalV) intergenic region IRES promotes translation by the simplest possible initiation mechanismELECTRON MICROSCOPY3.492020-12-23
156P5I|1|218S rRNAOryctolagus cuniculusStructure of a mammalian 80S ribosome in complex with the Israeli Acute Paralysis Virus IRES (Class 1)ELECTRON MICROSCOPY3.12019-09-18
166P5K|1|218S rRNAOryctolagus cuniculusStructure of a mammalian 80S ribosome in complex with the Israeli Acute Paralysis Virus IRES (Class 3)ELECTRON MICROSCOPY3.12019-09-18
176P5J|1|218S rRNAOryctolagus cuniculusStructure of a mammalian 80S ribosome in complex with the Israeli Acute Paralysis Virus IRES (Class 2)ELECTRON MICROSCOPY3.12019-09-18
187UCJ|1|918S rRNAOryctolagus cuniculusMammalian 80S translation initiation complex with mRNA and HarringtonineELECTRON MICROSCOPY3.12022-06-01
196P4G|1|218S rRNAOryctolagus cuniculusStructure of a mammalian small ribosomal subunit in complex with the Israeli Acute Paralysis Virus IRES (Class 1)ELECTRON MICROSCOPY3.12019-09-18
207MDZ|1|918S rRNAOryctolagus cuniculus80S rabbit ribosome stalled with benzamide-CHXELECTRON MICROSCOPY3.22021-09-01
216R6P|1|K18S rRNAOryctolagus cuniculusStructure of XBP1u-paused ribosome nascent chain complex (rotated state)ELECTRON MICROSCOPY3.12019-07-10
226P4H|1|218S rRNAOryctolagus cuniculusStructure of a mammalian small ribosomal subunit in complex with the Israeli Acute Paralysis Virus IRES (Class 2)ELECTRON MICROSCOPY3.22019-09-18
236P5N|1|218S rRNAOryctolagus cuniculusStructure of a mammalian 80S ribosome in complex with a single translocated Israeli Acute Paralysis Virus IRES and eRF1ELECTRON MICROSCOPY3.22019-09-25
246D9J|1|218S rRNAOryctolagus cuniculusMammalian 80S ribosome with a double translocated CrPV-IRES, P-sitetRNA and eRF1.ELECTRON MICROSCOPY3.22018-06-06
257JQC|1|ArRNAOryctolagus cuniculusSARS-CoV-2 Nsp1, CrPV IRES and rabbit 40S ribosome complexELECTRON MICROSCOPY3.32020-12-02
265LZS|1|918S ribosomal RNAOryctolagus cuniculusStructure of the mammalian ribosomal elongation complex with aminoacyl-tRNA, eEF1A, and didemnin BELECTRON MICROSCOPY3.312016-11-30
276W2T|1|a18S rRNAOryctolagus cuniculusStructure of the Cricket Paralysis Virus 5-UTR IRES (CrPV 5-UTR-IRES) bound to the small ribosomal subunit in the closed state (Class 2)ELECTRON MICROSCOPY3.362020-04-22
287A01|1|K318S RIBOSOMAL RNAOryctolagus cuniculusThe Halastavi arva virus intergenic region IRES promotes translation by the simplest possible initiation mechanismELECTRON MICROSCOPY3.62020-12-30
296MTD|1|918S rRNAOryctolagus cuniculusRabbit 80S ribosome with eEF2 and SERBP1 (unrotated state with 40S head swivel)ELECTRON MICROSCOPY3.32018-11-21
305LZV|1|918S ribosomal RNAOryctolagus cuniculusStructure of the mammalian ribosomal termination complex with accommodated eRF1(AAQ) and ABCE1.ELECTRON MICROSCOPY3.352016-11-30
316D90|1|218S rRNAOryctolagus cuniculusMammalian 80S ribosome with a double translocated CrPV-IRES, P-site tRNA and eRF1.ELECTRON MICROSCOPY3.22018-06-06
327SYS|1|218S rRNAOryctolagus cuniculusStructure of the delta dII IRES eIF2-containing 48S initiation complex, closed conformation. Structure 12(delta dII).ELECTRON MICROSCOPY3.52022-07-27
336YAN|1|218S ribosomal RNAOryctolagus cuniculusMammalian 48S late-stage translation initiation complex with histone 4 mRNAELECTRON MICROSCOPY3.482020-04-08
346MTC|1|918S rRNAOryctolagus cuniculusRabbit 80S ribosome with Z-site tRNA and IFRD2 (unrotated state)ELECTRON MICROSCOPY3.42018-11-21
356MTE|1|918S rRNAOryctolagus cuniculusRabbit 80S ribosome with eEF2 and SERBP1 (rotated state)ELECTRON MICROSCOPY3.42018-11-21
366W2S|1|A18S rRNAOryctolagus cuniculusStructure of the Cricket Paralysis Virus 5-UTR IRES (CrPV 5-UTR-IRES) bound to the small ribosomal subunit in the open state (Class 1)ELECTRON MICROSCOPY3.472020-04-22
376GZ5|1|B118S ribosomal RNAOryctolagus cuniculustRNA translocation by the eukaryotic 80S ribosome and the impact of GTP hydrolysis, Translocation-intermediate-POST-3 (TI-POST-3)ELECTRON MICROSCOPY3.52018-12-05
387SYR|1|218S rRNAOryctolagus cuniculusStructure of the wt IRES eIF2-containing 48S initiation complex, closed conformation. Structure 12(wt).ELECTRON MICROSCOPY3.62022-07-27
395LZZ|1|918S ribosomal RNAOryctolagus cuniculusStructure of the mammalian rescue complex with Pelota and Hbs1l (combined)ELECTRON MICROSCOPY3.472016-11-30
405LZW|1|918S ribosomal RNAOryctolagus cuniculusStructure of the mammalian rescue complex with Pelota and Hbs1l assembled on a truncated mRNA.ELECTRON MICROSCOPY3.532016-11-30
415LZX|1|918S ribosomal RNAOryctolagus cuniculusStructure of the mammalian rescue complex with Pelota and Hbs1l assembled on a UGA stop codon.ELECTRON MICROSCOPY3.672016-11-30
426GZ3|1|B118S ribosomal RNAOryctolagus cuniculustRNA translocation by the eukaryotic 80S ribosome and the impact of GTP hydrolysis, Translocation-intermediate-POST-1 (TI-POST-1)ELECTRON MICROSCOPY3.62018-12-05
437SYX|1|218S rRNAOryctolagus cuniculusStructure of the delta dII IRES eIF5B-containing 48S initiation complex, closed conformation. Structure 15(delta dII)ELECTRON MICROSCOPY3.72022-07-13
447SYW|1|218S rRNAOryctolagus cuniculusStructure of the wt IRES eIF5B-containing 48S initiation complex, closed conformation. Structure 15(wt)ELECTRON MICROSCOPY3.72022-07-13
457NWG|1|A218S Ribosomal RNAOryctolagus cuniculusMammalian pre-termination 80S ribosome with Hybrid P/E- and A/P-site tRNA's bound by Blasticidin S.ELECTRON MICROSCOPY3.82021-07-07
466GZ4|1|B118S ribosomal RNAOryctolagus cuniculustRNA translocation by the eukaryotic 80S ribosome and the impact of GTP hydrolysis, Translocation-intermediate-POST-2 (TI-POST-2)ELECTRON MICROSCOPY3.62018-12-05
475LZT|1|918S ribosomal RNAOryctolagus cuniculusStructure of the mammalian ribosomal termination complex with eRF1 and eRF3.ELECTRON MICROSCOPY3.652016-11-30
486YAM|1|218S ribosomal RNAOryctolagus cuniculusMammalian 48S late-stage translation initiation complex (LS48S+eIF3 IC) with beta-globin mRNAELECTRON MICROSCOPY3.62020-04-08
496MTB|1|918S rRNAOryctolagus cuniculusRabbit 80S ribosome with P- and Z-site tRNAs (unrotated state)ELECTRON MICROSCOPY3.62018-11-21
506HCJ|1|A218S ribosomal RNAOryctolagus cuniculusStructure of the rabbit 80S ribosome on globin mRNA in the rotated state with A/P and P/E tRNAsELECTRON MICROSCOPY3.82018-10-17
517SYQ|1|218S rRNAOryctolagus cuniculusStructure of the wt IRES and 40S ribosome ternary complex, open conformation. Structure 11(wt)ELECTRON MICROSCOPY3.82022-07-27
526R6G|1|K18S ribosomal RNAOryctolagus cuniculusStructure of XBP1u-paused ribosome nascent chain complex with SRP.ELECTRON MICROSCOPY3.72019-07-10
535LZU|1|918S ribosomal RNAOryctolagus cuniculusStructure of the mammalian ribosomal termination complex with accommodated eRF1ELECTRON MICROSCOPY3.752016-11-30
546HCF|1|A118S ribosomal RNAOryctolagus cuniculusStructure of the rabbit 80S ribosome stalled on globin mRNA at the stop codonELECTRON MICROSCOPY3.92018-10-17
557SYV|1|218S rRNAOryctolagus cuniculusStructure of the wt IRES eIF5B-containing pre-48S initiation complex, open conformation. Structure 14(wt)ELECTRON MICROSCOPY3.92022-07-20
566R7Q|1|K18S ribosomal RNAOryctolagus cuniculusStructure of XBP1u-paused ribosome nascent chain complex with Sec61.ELECTRON MICROSCOPY3.92019-07-10
573JAH|1|918S ribosomal RNAOryctolagus cuniculusStructure of a mammalian ribosomal termination complex with ABCE1, eRF1(AAQ), and the UAG stop codonELECTRON MICROSCOPY3.452015-08-12
585LZY|1|918S ribosomal RNAOryctolagus cuniculusStructure of the mammalian rescue complex with Pelota and Hbs1l assembled on a polyadenylated mRNA.ELECTRON MICROSCOPY3.992016-11-30
597SYN|1|218S rRNAOryctolagus cuniculusStructure of the HCV IRES bound to the 40S ribosomal subunit, head opening. Structure 8(delta dII)ELECTRON MICROSCOPY42022-07-13
607SYP|1|218S rRNAOryctolagus cuniculusStructure of the wt IRES and 40S ribosome binary complex, open conformation. Structure 10(wt)ELECTRON MICROSCOPY42022-07-27
615FLX|1|118S RRNAOryctolagus cuniculusMammalian 40S HCV-IRES complexELECTRON MICROSCOPY3.92015-12-23
623JAG|1|918S ribosomal RNAOryctolagus cuniculusStructure of a mammalian ribosomal termination complex with ABCE1, eRF1(AAQ), and the UAA stop codonELECTRON MICROSCOPY3.652015-08-12
633JAI|1|918S ribosomal RNAOryctolagus cuniculusStructure of a mammalian ribosomal termination complex with ABCE1, eRF1(AAQ), and the UGA stop codonELECTRON MICROSCOPY3.652015-08-12
643JAN|1|S218S ribosomal RNAOryctolagus cuniculusStructure of the scanning state of the mammalian SRP-ribosome complexELECTRON MICROSCOPY3.752015-08-05
653JAJ|1|S218S ribosomal RNAOryctolagus cuniculusStructure of the engaged state of the mammalian SRP-ribosome complexELECTRON MICROSCOPY3.752015-08-05

Release history

Release3.2413.2423.2433.2443.2453.246
Date2022-07-272022-08-032022-08-102022-08-172022-08-242022-08-31

Heat map of mutual geometric discrepancy, in Angstroms per nucleotide. Instances are ordered to put similar structures near each other. The colorbar ranges from 0 to the maximum observed discrepancy, up to 0.5

#S - ordering by similarity (same as in the heat map).
#SPDBTitleMethodResolutionLength
17A01|1|K3The Halastavi arva virus intergenic region IRES promotes translation by the simplest possible initiation mechanismELECTRON MICROSCOPY3.61801
26ZVK|1|K3The Halastavi arva virus (HalV) intergenic region IRES promotes translation by the simplest possible initiation mechanismELECTRON MICROSCOPY3.491869
33JAH|1|9Structure of a mammalian ribosomal termination complex with ABCE1, eRF1(AAQ), and the UAG stop codonELECTRON MICROSCOPY3.451719
43JAG|1|9Structure of a mammalian ribosomal termination complex with ABCE1, eRF1(AAQ), and the UAA stop codonELECTRON MICROSCOPY3.651719
53JAI|1|9Structure of a mammalian ribosomal termination complex with ABCE1, eRF1(AAQ), and the UGA stop codonELECTRON MICROSCOPY3.651719
63JAJ|1|S2Structure of the engaged state of the mammalian SRP-ribosome complexELECTRON MICROSCOPY3.751742
73JAN|1|S2Structure of the scanning state of the mammalian SRP-ribosome complexELECTRON MICROSCOPY3.751742
87NWI|1|9Mammalian pre-termination 80S ribosome with Empty-A site bound by Blasticidin SELECTRON MICROSCOPY3.131719
96YAM|1|2Mammalian 48S late-stage translation initiation complex (LS48S+eIF3 IC) with beta-globin mRNAELECTRON MICROSCOPY3.61742
106YAL|1|2Mammalian 48S late-stage initiation complex with beta-globin mRNAELECTRON MICROSCOPY31743
116YAN|1|2Mammalian 48S late-stage translation initiation complex with histone 4 mRNAELECTRON MICROSCOPY3.481743
127NWG|1|A2Mammalian pre-termination 80S ribosome with Hybrid P/E- and A/P-site tRNA's bound by Blasticidin S.ELECTRON MICROSCOPY3.81740
136HCJ|1|A2Structure of the rabbit 80S ribosome on globin mRNA in the rotated state with A/P and P/E tRNAsELECTRON MICROSCOPY3.81740
146HCF|1|A1Structure of the rabbit 80S ribosome stalled on globin mRNA at the stop codonELECTRON MICROSCOPY3.91732
156D90|1|2Mammalian 80S ribosome with a double translocated CrPV-IRES, P-site tRNA and eRF1.ELECTRON MICROSCOPY3.21697
167SYS|1|2Structure of the delta dII IRES eIF2-containing 48S initiation complex, closed conformation. Structure 12(delta dII).ELECTRON MICROSCOPY3.51697
177SYR|1|2Structure of the wt IRES eIF2-containing 48S initiation complex, closed conformation. Structure 12(wt).ELECTRON MICROSCOPY3.61697
187SYW|1|2Structure of the wt IRES eIF5B-containing 48S initiation complex, closed conformation. Structure 15(wt)ELECTRON MICROSCOPY3.71697
197SYX|1|2Structure of the delta dII IRES eIF5B-containing 48S initiation complex, closed conformation. Structure 15(delta dII)ELECTRON MICROSCOPY3.71697
206P5N|1|2Structure of a mammalian 80S ribosome in complex with a single translocated Israeli Acute Paralysis Virus IRES and eRF1ELECTRON MICROSCOPY3.21697
217JQB|1|ASARS-CoV-2 Nsp1 and rabbit 40S ribosome complexELECTRON MICROSCOPY2.71697
227TOQ|1|A18SMammalian 80S ribosome bound with the ALS/FTD-associated dipeptide repeat protein poly-PRELECTRON MICROSCOPY3.11690
236R6P|1|KStructure of XBP1u-paused ribosome nascent chain complex (rotated state)ELECTRON MICROSCOPY3.11698
247UCK|1|980S translation initiation complex with ac4c(-1) mRNA and HarringtonineELECTRON MICROSCOPY2.81664
257UCJ|1|9Mammalian 80S translation initiation complex with mRNA and HarringtonineELECTRON MICROSCOPY3.11664
267TOR|1|A18SMammalian 80S ribosome bound with the ALS/FTD-associated dipeptide repeat protein GR20ELECTRON MICROSCOPY2.91691
276R6G|1|KStructure of XBP1u-paused ribosome nascent chain complex with SRP.ELECTRON MICROSCOPY3.71698
286R5Q|1|KStructure of XBP1u-paused ribosome nascent chain complex (post-state)ELECTRON MICROSCOPY31698
296R7Q|1|KStructure of XBP1u-paused ribosome nascent chain complex with Sec61.ELECTRON MICROSCOPY3.91698
306MTC|1|9Rabbit 80S ribosome with Z-site tRNA and IFRD2 (unrotated state)ELECTRON MICROSCOPY3.41664
316MTB|1|9Rabbit 80S ribosome with P- and Z-site tRNAs (unrotated state)ELECTRON MICROSCOPY3.61664
325LZS|1|9Structure of the mammalian ribosomal elongation complex with aminoacyl-tRNA, eEF1A, and didemnin BELECTRON MICROSCOPY3.311697
335LZU|1|9Structure of the mammalian ribosomal termination complex with accommodated eRF1ELECTRON MICROSCOPY3.751698
345LZV|1|9Structure of the mammalian ribosomal termination complex with accommodated eRF1(AAQ) and ABCE1.ELECTRON MICROSCOPY3.351698
355LZT|1|9Structure of the mammalian ribosomal termination complex with eRF1 and eRF3.ELECTRON MICROSCOPY3.651698
365LZW|1|9Structure of the mammalian rescue complex with Pelota and Hbs1l assembled on a truncated mRNA.ELECTRON MICROSCOPY3.531698
375LZX|1|9Structure of the mammalian rescue complex with Pelota and Hbs1l assembled on a UGA stop codon.ELECTRON MICROSCOPY3.671698
385LZZ|1|9Structure of the mammalian rescue complex with Pelota and Hbs1l (combined)ELECTRON MICROSCOPY3.471698
395LZY|1|9Structure of the mammalian rescue complex with Pelota and Hbs1l assembled on a polyadenylated mRNA.ELECTRON MICROSCOPY3.991698
406SGC|1|A1Rabbit 80S ribosome stalled on a poly(A) tailELECTRON MICROSCOPY2.81697
417MDZ|1|980S rabbit ribosome stalled with benzamide-CHXELECTRON MICROSCOPY3.21697
427O7Y|1|A2Rabbit 80S ribosome stalled close to the mutated SARS-CoV-2 slippery site by a pseudoknot (high resolution)ELECTRON MICROSCOPY2.21688
437O7Z|1|A2Rabbit 80S ribosome stalled close to the mutated SARS-CoV-2 slippery site by a pseudoknot (classified for pseudoknot)ELECTRON MICROSCOPY2.41688
447O80|1|A2Rabbit 80S ribosome in complex with eRF1 and ABCE1 stalled at the STOP codon in the mutated SARS-CoV-2 slippery siteELECTRON MICROSCOPY2.91688
457O81|1|A2Rabbit 80S ribosome colliding in another ribosome stalled by the SARS-CoV-2 pseudoknotELECTRON MICROSCOPY3.11688
466GZ5|1|B1tRNA translocation by the eukaryotic 80S ribosome and the impact of GTP hydrolysis, Translocation-intermediate-POST-3 (TI-POST-3)ELECTRON MICROSCOPY3.51708
477JQC|1|ASARS-CoV-2 Nsp1, CrPV IRES and rabbit 40S ribosome complexELECTRON MICROSCOPY3.31697
486P4H|1|2Structure of a mammalian small ribosomal subunit in complex with the Israeli Acute Paralysis Virus IRES (Class 2)ELECTRON MICROSCOPY3.21697
496P4G|1|2Structure of a mammalian small ribosomal subunit in complex with the Israeli Acute Paralysis Virus IRES (Class 1)ELECTRON MICROSCOPY3.11697
506P5K|1|2Structure of a mammalian 80S ribosome in complex with the Israeli Acute Paralysis Virus IRES (Class 3)ELECTRON MICROSCOPY3.11697
516P5I|1|2Structure of a mammalian 80S ribosome in complex with the Israeli Acute Paralysis Virus IRES (Class 1)ELECTRON MICROSCOPY3.11697
526P5J|1|2Structure of a mammalian 80S ribosome in complex with the Israeli Acute Paralysis Virus IRES (Class 2)ELECTRON MICROSCOPY3.11697
536W2S|1|AStructure of the Cricket Paralysis Virus 5-UTR IRES (CrPV 5-UTR-IRES) bound to the small ribosomal subunit in the open state (Class 1)ELECTRON MICROSCOPY3.471697
547OYD|1|9Cryo-EM structure of a rabbit 80S ribosome with zebrafish Dap1bELECTRON MICROSCOPY2.31664
556MTE|1|9Rabbit 80S ribosome with eEF2 and SERBP1 (rotated state)ELECTRON MICROSCOPY3.41664
566MTD|1|9Rabbit 80S ribosome with eEF2 and SERBP1 (unrotated state with 40S head swivel)ELECTRON MICROSCOPY3.31692
576GZ4|1|B1tRNA translocation by the eukaryotic 80S ribosome and the impact of GTP hydrolysis, Translocation-intermediate-POST-2 (TI-POST-2)ELECTRON MICROSCOPY3.61708
586GZ3|1|B1tRNA translocation by the eukaryotic 80S ribosome and the impact of GTP hydrolysis, Translocation-intermediate-POST-1 (TI-POST-1)ELECTRON MICROSCOPY3.61708
595FLX|1|1Mammalian 40S HCV-IRES complexELECTRON MICROSCOPY3.91708
606W2T|1|aStructure of the Cricket Paralysis Virus 5-UTR IRES (CrPV 5-UTR-IRES) bound to the small ribosomal subunit in the closed state (Class 2)ELECTRON MICROSCOPY3.361697
617SYP|1|2Structure of the wt IRES and 40S ribosome binary complex, open conformation. Structure 10(wt)ELECTRON MICROSCOPY41680
627SYQ|1|2Structure of the wt IRES and 40S ribosome ternary complex, open conformation. Structure 11(wt)ELECTRON MICROSCOPY3.81680
637SYV|1|2Structure of the wt IRES eIF5B-containing pre-48S initiation complex, open conformation. Structure 14(wt)ELECTRON MICROSCOPY3.91680
647SYN|1|2Structure of the HCV IRES bound to the 40S ribosomal subunit, head opening. Structure 8(delta dII)ELECTRON MICROSCOPY41697
656D9J|1|2Mammalian 80S ribosome with a double translocated CrPV-IRES, P-sitetRNA and eRF1.ELECTRON MICROSCOPY3.21697