ioo8 



SUBJECT INDEX 



olfactory pits, induction of — from the 



epiblast, 371 

 olfactory placodes, 393, 450 

 Oligochaeta, 592 

 oligonucleotides, 285 

 oligosaccharides of the hyaluronic 



acid chain. 39 

 omphalopleur, bilaminar, 719 

 omphalomesenteric circulation, 720 

 oncocytes, 965 

 Oniscus, 604 



— asellus, 185 

 Onsager coefficients, 154 

 — ■ reciprocal relations, 153 

 ontogenesis, 588 

 ontogenetic allometry, 228 

 — ■ changes, 140 



OOA carboxylase, 42 



oocyte, preexisting polarity, 318 



oocytes, growth and polarization, 307 



— of the hamster, 308 



oogenesis, symmetrization during — , 315 



oogonia, 306 



Oomycetes, 750 



ooplasmic segregation, 331 



open system, the organism as an — , 143 



open systems, entropy, 152 



, equifinality as characteristic, 213 



— — , kinetics, 145 



, thermodynamics, 151 



operculum-reversal in regeneration of 



Hydriodes, 642 

 Ophioglypha, 605 



Ophiostoma multiannulatum, 930, 935 

 optic vesicles, 385, 407 

 optimal growth, 222 

 Organ Anlagen, 140, 214 

 Organisationszentrum, 357 

 organisine, 387, 478 



— inducing regeneration of Planarian 

 eyes, 643 



organism, building materials, 137 



— as an open system, 143 

 organismic epigenesis, 742 



— nature of the embryo, 715 

 organization, 152 



— , bilateral, 315 



— of a regenerate, 600 

 organizing action in regeneration of 



muscle tissue, cartilage, bone, 

 endoderm and notochord, 646 

 organizer, 351, 519 



— of amphibia, 716 



— , effect of ultraviolet irradiation, 412 



— , fundamental — experiment, 351 



— , graft of — with reversal of the cephalo- 



caudal axis, 386 

 organizer territory, 346 



— transplantation, Spemann's, 352 

 organogenesis of the gonads, 467 



— and nitrogen metabolism, 727 

 organogenetic areas, 354 



organs, balance of — and chemical consti- 

 tuents, 214 



organ-specific protein, 450 



organ stabilization, axial , 353 



ornithine, 78 



— , aldehydes as substrate in reaction 

 between — and glyoxylate, 84 



citrulline-arginine cycle, 80 



— , conversion to arginine, 80 



— cycle in the chick embryo, 741 



— as proline precursor in mammals, fungi 

 and bacteria, 78 



— synthesis, 79 

 orotic acid, 1 1 



— -15N, 907 



— , biosynthesis, 98 



— utilization, 99 

 Orthagoriscus, 239 

 orthoclone, 954 

 —, senile, 954 

 orthogenesis, 245 

 Orthoptera, 180 

 Oryza sativa, 760 



osmotic gradient in plant cells, 792 



— inhibition of plant cell enlargement, 792 



— pressure, 793 

 osteoblasts, 693 



osteoclasts, protease secreting, 61 1 



osteocytes, 693 



otocyst, 452 



— , ectopic, 453 



ourogenesis, 368, 397 



ouroneuron, 368 



outgrowth, 567 



ovarian, and adrenocortical 



tumorigenesis, post-irradiation, 848 

 — , hormonal influence on X-ray induced 



— tumor, 828 



— neoplasms induced by whole body X- 

 irradiation, 848 



— pituitary endocrine relationships 

 involved ovarian, pituitary and 

 mammary tumorigenesis, 835 



— tumors, induced, 829 



— tumorigenesis, 840 



, endocrine interrelationship involved 



in following transplantation in the 



spleen, 827 



inhibition by functional ovarian 



transplants, mechanism, 830 



