S U B J E C T I N D E X
775
Pure cultures (strains) (see also Cell
strains), 167-72
of amoebocytes, 157
of conjunctiva, 170
contamination of, 8, 170
development of, 5, 8, 45 et seq.
o f epidermis, 170-1
of epithelia, 46, 157
of liver, 170-1
of mechanocytes, 46, 157
nature o f cells in, 8, 46, 168, 172
obtained b y overgrowth, 46
uniform environment in, 11
in virus research, 8
Purines,
and action o f cortisone, 609
analogues of, 230
biosynthesis of, 223
C 0 2 and synthesis of, 261
in mononucleotides, 241
in R N A and D N A , 317
in synthetic media, 117, 128
Puromycin,
inhibition o f cell aggregation b y , 501
inhibition o f protein synthesis by, 223,
343
Pyknosis,
of lymphocytes, 608
Pyridoxine (Pyridoxal)
and amino-acid requirements, 116
phosphate, 283
required b y cell lines, 281
in synthetic media, 115-16, 280
Pyrimidines,
and action o f cortisone, 609
analogues of, 230
biosynthesis of, 223
C O a and synthesis of, 261
in D N A and R N A , 317
DNA-ase and, 326
in mononucleotides, 241
in synthetic media, 117, 128
Pyronin stain,
for R N A , 321
Pyruvate (pyruvic acid)
and amino-acid formation, 2 8 8 - 9
antagonizing monoiodoacetate, 571
and blastoderms, 566
and growth, 255, 257
and leakiness o f cells, 248
oxaloacetic acid and, 251
as population-dependent
metabolite,
283, 286
requirement for, 283, 289
as substitute for glucose, 289, 577
Q.
Quartz,
for hanging-drop cultures, 29, 32
R
Radiation,
agar and effects of, 78
and cell cycle, 226-8, 3 4 3 - 4
damage, in autoradiography, 418
of lysosomes, 611
and mitotic spindle, 215
and onset o f mitosis, 344
of tissue cultures, 7, 78
Radiosensitivity,
of D N A synthesis, 344
o f nuclear phosphorylation, 344
Radius,
action o f insulin on, 5 9 7 - 8
hydrocortisone and, 615
parathyroid and, 646
thyroxine and, 641
triiodothyronine and, 6 4 2 - 3
vitamin A and, 615, 675
Radius (of outgrowth),
as measure o f growth, 247
" R a f t " methods,
of organ culture, 79
R a y o n ,
for organ cultures, 73, 76, 78-9
Recombination (Reaggregation), 4 8 9 -
524
Reconstruction phase,
of mitosis, 205
Redifferentiation,
and cell type, 476
R e d o x potentials,
and mitosis and migration, 687
vitamin G and, 682-3
Regionalization,
in aggregates, 522-3
Regulation,
in blastoderm, 561-2
in embryonic development, 534, 538
in internal marginal zone, 538
of isolated blastomeres, 580
in morphogenetic fields, 535
775
Pure cultures (strains) (see also Cell
strains), 167-72
of amoebocytes, 157
of conjunctiva, 170
contamination of, 8, 170
development of, 5, 8, 45 et seq.
o f epidermis, 170-1
of epithelia, 46, 157
of liver, 170-1
of mechanocytes, 46, 157
nature o f cells in, 8, 46, 168, 172
obtained b y overgrowth, 46
uniform environment in, 11
in virus research, 8
Purines,
and action o f cortisone, 609
analogues of, 230
biosynthesis of, 223
C 0 2 and synthesis of, 261
in mononucleotides, 241
in R N A and D N A , 317
in synthetic media, 117, 128
Puromycin,
inhibition o f cell aggregation b y , 501
inhibition o f protein synthesis by, 223,
343
Pyknosis,
of lymphocytes, 608
Pyridoxine (Pyridoxal)
and amino-acid requirements, 116
phosphate, 283
required b y cell lines, 281
in synthetic media, 115-16, 280
Pyrimidines,
and action o f cortisone, 609
analogues of, 230
biosynthesis of, 223
C O a and synthesis of, 261
in D N A and R N A , 317
DNA-ase and, 326
in mononucleotides, 241
in synthetic media, 117, 128
Pyronin stain,
for R N A , 321
Pyruvate (pyruvic acid)
and amino-acid formation, 2 8 8 - 9
antagonizing monoiodoacetate, 571
and blastoderms, 566
and growth, 255, 257
and leakiness o f cells, 248
oxaloacetic acid and, 251
as population-dependent
metabolite,
283, 286
requirement for, 283, 289
as substitute for glucose, 289, 577
Q.
Quartz,
for hanging-drop cultures, 29, 32
R
Radiation,
agar and effects of, 78
and cell cycle, 226-8, 3 4 3 - 4
damage, in autoradiography, 418
of lysosomes, 611
and mitotic spindle, 215
and onset o f mitosis, 344
of tissue cultures, 7, 78
Radiosensitivity,
of D N A synthesis, 344
o f nuclear phosphorylation, 344
Radius,
action o f insulin on, 5 9 7 - 8
hydrocortisone and, 615
parathyroid and, 646
thyroxine and, 641
triiodothyronine and, 6 4 2 - 3
vitamin A and, 615, 675
Radius (of outgrowth),
as measure o f growth, 247
" R a f t " methods,
of organ culture, 79
R a y o n ,
for organ cultures, 73, 76, 78-9
Recombination (Reaggregation), 4 8 9 -
524
Reconstruction phase,
of mitosis, 205
Redifferentiation,
and cell type, 476
R e d o x potentials,
and mitosis and migration, 687
vitamin G and, 682-3
Regionalization,
in aggregates, 522-3
Regulation,
in blastoderm, 561-2
in embryonic development, 534, 538
in internal marginal zone, 538
of isolated blastomeres, 580
in morphogenetic fields, 535