S U B J E C T I N D E X
787
W
Walker ascites tumour, 53
Walker carcinosarcoma,
asparagine and, 289
and hyaluronic acid, 382-3
and invasiveness, 382-3
keto acids and, 125, 248
Washing o f cells,
and reaggregation, 499
Watch-glass technique,
for blastoderms, 553-5
development of, 6, 7 3 - 4
with " e m b r y o l o g i c a l " watch glass, 73,
75
Shaffer's modification of, 665
Water,
content o f nuclei, 220
de-ionization of, 22, 117
intracellular, 278
mucopolysaccharides and transport of,
357, 376
necessity for purity, 22, 117
treatment o f hard, 22
Watson-Crick strands, 427
Waymouth's medium, 109
A , 686
M B 752/1, 470
Weight,
wet and dry as estimates o f tissue, 42
Wetness,
of organ cultures, 78-9
White's media,
for animal tissues, 108-9
and blastoderms, 554, 566
for tomato roots, 106
Whitten's medium, 5 7 6 - 7 , 580
Wolff and Haffen's medium,
for reptilian embryos, 584
Wolff and Simon's medium,
for blastoderms, 554
Wolffian ducts,
sex hormones and, 6 1 7 - 1 8
Wounds,
contraction of, 195
healing of, in cell colony, 196, 229
mucopolysaccharides in, 385
X
X-chromosomes, 399-451
asynchronous with autosomes, 438,447
and D N A synthesis, 4 4 7 - 8
in gynandromorphs, 582
of hamster, 415, 4 3 6 - 7 , 447-18
heterochromacy and, 433, 446
heteropyknotic, 4 3 4 - 6 , 443, 448, 451
inactivation of, 4 4 8 - 5 0
in insects, 408
inversion in, 442
in Klinefelter's syndrome, 405
multiple, 406
occurrence of, 4 0 3 - 5
in polyploidy, 411
in regenerating liver, 434
relation o f to Y , 415, 451
and sex chromatin, 401, 447
somatic pairing of, 446
in spermatocytes o f grasshoppers,
4 3 3 - 4 , 437, 443
supernumerary, 446-7
in Turner's syndrome, 4 0 6 - 7 , 540
X x X 2 Y system of, 447
X-rays,
on blastopore lip, 541-2
on cell cycle, 226
and D N A , 319, 343
on leucocytes, 424
on nucleolus, 328
and R N A , 319
used to stop division o f cells, 63, 206
Xylose, 247, 248
Y
Y-chromosome, 399-451
and development o f testes, 408
o f Drosophila, 443
functions of, 449-51
of hamster, 436
heterochromatic, 431-3
and male fertility, 432
occurrence of, 4 0 4 - 6
relation to X , 415, 451
as sex chromatin, 436
Yeast,
extract as supplement to synthetic
media, 105
Yolk,
acquired inducing power of, 541
in amphibian cells, 533
cells, 537
extract of, and culture o f ova, 576
in fish eggs, 582-3
in m e d i u m for blastoderms, 553, 565,
567
787
W
Walker ascites tumour, 53
Walker carcinosarcoma,
asparagine and, 289
and hyaluronic acid, 382-3
and invasiveness, 382-3
keto acids and, 125, 248
Washing o f cells,
and reaggregation, 499
Watch-glass technique,
for blastoderms, 553-5
development of, 6, 7 3 - 4
with " e m b r y o l o g i c a l " watch glass, 73,
75
Shaffer's modification of, 665
Water,
content o f nuclei, 220
de-ionization of, 22, 117
intracellular, 278
mucopolysaccharides and transport of,
357, 376
necessity for purity, 22, 117
treatment o f hard, 22
Watson-Crick strands, 427
Waymouth's medium, 109
A , 686
M B 752/1, 470
Weight,
wet and dry as estimates o f tissue, 42
Wetness,
of organ cultures, 78-9
White's media,
for animal tissues, 108-9
and blastoderms, 554, 566
for tomato roots, 106
Whitten's medium, 5 7 6 - 7 , 580
Wolff and Haffen's medium,
for reptilian embryos, 584
Wolff and Simon's medium,
for blastoderms, 554
Wolffian ducts,
sex hormones and, 6 1 7 - 1 8
Wounds,
contraction of, 195
healing of, in cell colony, 196, 229
mucopolysaccharides in, 385
X
X-chromosomes, 399-451
asynchronous with autosomes, 438,447
and D N A synthesis, 4 4 7 - 8
in gynandromorphs, 582
of hamster, 415, 4 3 6 - 7 , 447-18
heterochromacy and, 433, 446
heteropyknotic, 4 3 4 - 6 , 443, 448, 451
inactivation of, 4 4 8 - 5 0
in insects, 408
inversion in, 442
in Klinefelter's syndrome, 405
multiple, 406
occurrence of, 4 0 3 - 5
in polyploidy, 411
in regenerating liver, 434
relation o f to Y , 415, 451
and sex chromatin, 401, 447
somatic pairing of, 446
in spermatocytes o f grasshoppers,
4 3 3 - 4 , 437, 443
supernumerary, 446-7
in Turner's syndrome, 4 0 6 - 7 , 540
X x X 2 Y system of, 447
X-rays,
on blastopore lip, 541-2
on cell cycle, 226
and D N A , 319, 343
on leucocytes, 424
on nucleolus, 328
and R N A , 319
used to stop division o f cells, 63, 206
Xylose, 247, 248
Y
Y-chromosome, 399-451
and development o f testes, 408
o f Drosophila, 443
functions of, 449-51
of hamster, 436
heterochromatic, 431-3
and male fertility, 432
occurrence of, 4 0 4 - 6
relation to X , 415, 451
as sex chromatin, 436
Yeast,
extract as supplement to synthetic
media, 105
Yolk,
acquired inducing power of, 541
in amphibian cells, 533
cells, 537
extract of, and culture o f ova, 576
in fish eggs, 582-3
in m e d i u m for blastoderms, 553, 565,
567