SUBJECT INDEX 



143 



Reticulocytes, 96 

 correlation between basophilia, 

 RNA content and amino acid 

 incorporation in, 5 

 incorporation of amino acids into 



microsomes of, 21 

 RNA and protein synthesis in, 125- 

 127 

 Reticulo-endothelial cells, 6 

 Revitalization of grafts, 

 blocked by chemical analogues, 67, 



68 

 after heat shocks, 68, 71, 72 

 of lethal hybrids, 68, 78, 88 

 Rhizobium, 42 

 Ribonuclease (RNase), 

 antimitotic activity, 34, 41, 42 

 digests, of RNA, 31, 32 

 effects of, 



on living cells, 34-44 

 on morphogenesis, 79, 80 

 on neural induction, 58, 59 

 on regeneration in Acetabularia, 

 115 

 RNA-RNase complex formation, 



38 

 test, for RNA detection, 3, 4 

 Ribonucleic acid (RNA), 

 cytoplasmic, 



control by nucleus on main- 

 tenance of, 102 

 in microsomes, 19-25 

 origin of, 98,99, 103-105, 115, 

 116,130,131 

 distribution, in Amphibian eggs, 



60-67 

 effects of, on RNase-treated cells, 



37, 38, 43 

 as genetic determinant, 29, 30, 42 

 gradients, 



effects of lithium on, 70 

 effects of physical treatments on, 

 70-78 

 in intercellular matrix, 85 

 localization, 2-4, 19 

 metabolically inactive, 6 

 . metabolism, after enucleation, 

 in Acetabularia, 113-116 



in amoebae, 101-105 

 RNase-RNA complex formation, 



38 

 role of, 



in growth and morphogenesis, 

 55-90 



in neural induction, 57-60, 80 



in plant viruses, 25-30, 43 



in protein synthesis, 1-49, 130, 

 131 

 store, in unfertilized eggs, 2 

 synthesis, role of nucleus in (see 



Nuclei, role) 

 as template for proteins, 47-49, 



130 

 Ribonucleoprotein, 

 diffusion of, into induced tissues, 



82, 83 

 role of, 



in neural induction, 58-60, 86 



in protein synthesis, 19-25 

 sensitivity of, to heating, 72 

 small particles of, 20, 22, 23, 49 



Salivary glands, 

 RNA content, 7 



specific enzymes in microsomes of, 



20 



Sea Urchin eggs, incorporation of 



RNA precursors into enucleate, 126 



"Second factor" in parthenogenesis, 



56, 57 

 — SH groups, gradients of, during 



development, 65 

 Shocks, effects, on morphogenesis, 

 by heat, 70-77 

 by pH shifts, 77 

 Silk glands, RNA content, 4 

 Skin, amino acid incorporation into, 6 

 Small ribonucleoprotein particles (see 



Ribonucleoproteins, small) 

 Soya bean-trypsin inhibitor, 59 

 Specificity, 

 of DNA's, RNA's and proteins, 

 130,131 

 - species — , of nucleus-controlled 

 morphogenetic substances, 1 1 3 



