388
S U B J E C T I N D E X
Thiocyanide,
animalization by, 227, 230-238, 240
effect on cell organelles, 248
on embryos, 248-249
notochord nuclear counts, 229
protein breakdown, 243-246,
251
Thorax, insect development, 277-279,
289
Thyroid,
glands, development, 355
in aortic arch suppression, 335
in metamorphosis, 66, 74
Torpedo actin antiserum, 219
Tripeptidase, 68, 72, 98
Triton, 29, 65
Triturus,
alpestris, 38
egg symmetry, 38,
nerve differentiation, 240
torosus, 86
Tropidonotus natrix, 49, 51
Truncal septation, 345
Trypsin, 243, 245-248
and cell dispersion, 157
Tubularia, 322, 327
Turkey embryo orientation, 43, 45
U
Ultraviolet rays,
in embryo suppression, 261, 281,
288-289, 299, 334
Urea, animalization by, 227
effect on cell organelles, 248
on embryogenesis, 239
notochord induction by, 230
release by embryos, 86-88
Uterus,
egg presentation in, 43-47
egg rotation in, 41, 47
V
Vegetahzation, 227, 229, 231, 233-238
Vegetalizing agents,
effect on proteins, 241-246
Ventricular septal defects, 333-334,
355-357, 359
congenital, 367-369
Viscosity of protein solutions, 238, 241
Vitamin C, in metamorphosis, 66
Vitamin deficiency,
cardiac defects and, 332
Vitellophags,
in egg cleavage, 277
W
Wachtliella, 275
persicaria, 267, 269
Water uptake, embryonic, 63
Wolff crest,
in limb development, 187, 204
Wyeomyia, 297
X
X-rays, 324
cardioaortic defects caused by 332,
335, 338, 381
effect on DNA synthesis, 285
in embryo suppression, 299
inhibition of regeneration by, 308
Xenopus,
aortic arch suppression, 335
laevis, 73, 79
limb buds, 195, 198,202
notochord induction, 229
Y
Yolk contraction, 283, 288-290