SUBJECT INDEX 



1003 



mental growth in man, 248 



meperidine, 12 



6-mercaptopurine, as anti-cancer agent, 



934 



— as antagonist of lipogenesis, 934 



— inhibiting mitosis in cultures of mouse 

 sarcoma, 180, 933 



meresis, 766 

 meristem, 749 

 — , secondary, 767 



— , suppression of one by another, 811 

 meristemoids, 81 1 

 meristic segmentation, 353 

 merogonic hybrids, 516 

 Merychippus, 240 



mesenchyme, and apical epiblast, interrela- 

 tions, 458 



— blastula stage, 514 



— in differentiation of epithelium, 464 

 — , growth-inhibiting, 408 



— , thoracic, 523 



mesoblast, 347 



— , segmentation of the, 468 



mesoblastic layer of the archenteric 



roof, 355 

 mesocotyl, 756 



mesodermal, activating factors, 521 

 — , induction with bonemarrow extracts, 



521 

 — , primordium, 520 

 mesoderm, transforming principle, 52 1 

 mesonephros, 471 

 mesonephric blastema, 466 

 mesothelium, 563 



metabolically active body mass, 208 

 metabolic, acid phosphomonoesterase in — 



processes in the cell, 340 



— changes in regeneration, 608 



— contagion, 479 



— cycles, interrelationship, 734 



— , genetic mechanism related to — proc- 

 esses, 733 



— , genie mechanism for inheritance of — 

 patterns, 716 



— gradients, 233 



— measurements of tissue cultures, 575 



— poisons, 286 



— rate and body size, interspecifically re- 

 lation, 181 



, explanations of the size-dependence, 



185 



— stability of DNA, 266 



— types, 180 



, connection of with types of 



respiratory apparatus, 188 

 metabolism, genetic control, 734 



metabolism, growth, 194 

 — , maintenance, 194 



— of nitrogen compounds, 715 



— , oxidative — of liver mitochondria, 18 

 — , reproductive, 194 

 — , selfregulation, 145 



— of sulphur compounds in 

 regeneration, 615 



— of thyroid tumors, 879 

 — , working, 194 



metabolizing systems, energetics, 155 

 metachromasia, 329 

 metachromatic granules, 338 



— plasm, 340 



metamorphosis and thyroxin, 633 

 metaphase, arrest by 4-aminopteroylgluta- 



mic acid, 4-aminopteroylthreonine and 

 4-aminopteroyIalanine, 943 



— arrest by sulfanilamide, 943 



— blocking by aminopterin, 943 



— blocking by [ii-(/?-fluorphenyl)-DL- 

 alanine, 945 



— delaying by aspartic acid, 937 



— of first maturation spindle, 318 



— of mitosis blocking by a-methopterin, 



929 



— plate in plant cell division, 768 

 metaplasm, diffuse, 339 



metastatic lesions, lysozyme activity, 913 



Metazoa, 468 



Metazoa, lower, 589 



metanephric tubules, formation of 



definite , 465 



metanephros, 471 



methadone, 12 



methionine, 46, 63, 74, 87, 505, 610 



— , active, 46 



— , adenosine thiomethylriboside in — 



synthesis in yeast, 75 

 — , conversion of homocysteine to, 73 

 — , — of homoserine to, 73 



— deficiency responsibility for induction 

 of hepatic neoplasms, 866 



— , incorporation of — into proteins, 296 

 — , methyl group transfer from — , 74 



— as source of cysteine synthesis, 63, 616 



— sulfoxide inhibiting glutamine 

 synthesis, 87 



— sulfoxide, vegetalizing effect, 505 



— as sulfur source for cysteine synthesis, 63 

 — , synthesis of — from homocysteine and 



formaldehyde, 74 

 methods to calculate growth data, 192 

 a-methopterin arresting metaphase of 



mitosis, 929 

 jf?-methoxy cinnamic acid, 794 



