. The biological role of ribonucleic acids. RNA; Biosynthesis. ••§. • Fig. 40. Incorporation of labeled phenylalanine in isolated thymus nuclei. Autoradiographic method (A. Ficq).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Brachet, J. (Jean), 1909-. Amsterdam, New York, Elsevier Pub. Co.

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