Subject Index 



263 



Red blood cells 



dissolution of, in temperature 



range 0° to +40°, 218-224 

 effects of cold storage on, 224— 



229 

 enzyme content of, 235 

 human, physical instability of, 

 and its possible importance 

 in their senescence, 215- 

 232 

 life-span of, 233, 234 

 physical instability of, 217 

 problem of ageing of, 229-231 

 self-repair of, 234 

 storage of, 236-238 

 Reinke, crystalloids of, 92, 94, 95 

 Reproductive glands, accessory, 

 role of foetal sex hormones in de- 

 velopment of, 3-17 

 Reproductive tract, relation of 

 foetal sex hormones to differenti- 

 ation of, 3-17 

 Respiration and protein metabolism 

 in ageing tissues, 207, 208 



Seminal vesicles, development of, 

 in cultured reproductive tracts 



8,9 

 normal development of, in rat, 5 

 r61e of endogenous sex hormones 

 in development of, 8, 9 

 Sertoli cells, 97, 98, 99 

 Sex hormones, foetal, relation to 

 differentiation of reproductive 

 tract, 3-17 

 Somatotrophic hormone, foetal 

 development of rat after adminis- 

 tration of, to the mother, 161-175 

 Spermatid, differentiation of, 87-91 

 electron microscope in study of, 

 87-96 

 Spermatocyte divisions, 87 

 Spermatogenesis, condensation of 

 the karyoplasm, 90, 91 

 electron microscope in study of, 



87-96 

 formation of aerosome and head 



cap, 88, 89 

 observations on, 87-96 

 spermatocyte divisions, 87 

 Stilboestrol, effect on ovaries of 



hypophysectomized rats, 60—64 

 Sweat gland, apocrine (see Apocrine 

 sweat glands) 



Testis, human, cytomorphosis of 

 germinal and interstitial cells 

 of, 86-99 

 electron microscopy of, 86-99 

 interstitial cells, observations on, 

 91-96 

 in human foetus, 26 

 in rabbit foetus, 19, 20 

 of deer, seasonal changes in, 179, 

 180 

 Testis hormone, role in differenti- 

 ation of reproductive tract, 3-17 

 Testicular control of prostate in 

 foetus, 19, 20 

 function and sexual structures, 19, 

 20 

 Testosterone, masculinization of 

 female urogenital sinus by, 18 

 role in differentiation of repro- 

 ductive tract, 3-17 

 Thyroid, in the foetus, 21, 22 



relationship between hypophysis 

 and, 21, 22 



Urogenital sinus, and prostate for- 

 mation, 20 

 effects of endogenous sex hor- 

 mones on, 3-17 

 Uterus, uptake of radioactive potas- 

 sium by, in rat and goat, 148-160 



Vaginal cornification, 49, 58 

 Villi, placental, in goat, 155-158 



Wolffian ducts, development of, in 



cultured reproductive tracts, 



5-8 

 effects of surgical injury or 



absence of testis, 4-8 

 normal development of, in rat, 5 

 role of endogenous sex hormones 



in development of, 3—17 

 role of endogenous sex hormones 



in retention or loss of, 3 

 testicular control of, 19 



X- irradiation, effect on oocytes, 34 

 effect on secretory capacity of 



ovary, 49-52 

 of mouse ovary, 49, 57 

 of rat ovary, 49-52 



Yolk sac, mitochondria of, 101, 102 



