||Human Homo sapiens
||Duncan R, Hershey JW. Identification and quantitation of levels of protein synthesis initiation factors in crude HeLa cell lysates by two-dimensional polyacrylamide gel electrophoresis. J Biol Chem. 1983 Jun 10 258(11):7228-35. p.7233 left column bottom paragraphPubMed ID6853516
||Ribosome levels were measured by quantitative
precipitation of cytoplasmic ribosomes and ribosomal subunits,
phenol extraction, and determination of the mass of 28 S rRNA by
sucrose gradient centrifugation and absorbance measurements.