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Technical Resources > Appendix > Molecular Biology Tables
Ribosomal RNA Sizes
Species rRNA Size (kb)
Human 18S 1.9
28S 5.0
Mouse 18S 1.9
28S 4.7
Drosophila 18S 2.0
28S 4.1*
Tobacco Leaf 16S 1.5
18S 1.9
23S 2.9
25S 3.7
Yeast 18S 2.0
26S 3.8
E. coli 16S 1.5
23S 2.9
Xenopus 28S 4.0
18S 1.8

*Drosophila 28S rRNA is processed into 2 fragments that migrate in a similar manner to the 18S rRNA.
 
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