Ciba Foundation Symposium - Mammalian Germ Cells by Ciba Foundation, G. E. W. Wolstenholme, Margaret P. Cameron,

By Ciba Foundation, G. E. W. Wolstenholme, Margaret P. Cameron, Jessie S. Freeman

Content:
Chapter 1 Biochemical elements of Semen (pages 1–11): T. Mann
Chapter 2 The Seminal Amino?Acid and Carbohydrate trend of Bulls with common and irregular Testes functionality (pages 12–27): F.X. Gassner and M.L. Hopwood
Chapter three Excretion of impartial Steroids within the Urine of Bulls with Warmth?Induced Aspermia. The impression of shipping on Spermatogenesis and Excretion of impartial Steroids within the Urine of Bulls (pages 28–36): P. Meschaks
Chapter four The influence of shipping on Spermatogenesis and Excretion of impartial Steroids within the Urine of Bulls (pages 37–45): P. Meschaks
Chapter five Aeroic Metabolism and Semen caliber (pages 46–58): C. Terner
Chapter 6 elements Controlling charges of Metabolism in Mammalian Spermatozoa (pages 59–70): Henry A. Lardy
Chapter 7 Proteolytic Enzymes in Human Semen (pages 71–81): Frank Lundquist
Chapter eight a few components Influencing the sturdiness of Bull Sperm Cells in vitro (pages 82–90): J.C.N. Kok
Chapter nine The impression of Streptomycin on Bull Semen (pages 91–102): D.R. Melrose
Chapter 10 Semen features and Fertility within the Bull (pages 103–107): M.W.H. Bishop, R.C. Campbell and J.L. Hancock
Chapter eleven The upkeep of Spermatozoa at Low Temperatures (pages 108–121): C. Polge
Chapter 12 The hobbies of Spermatozoa (pages 122–133): Lord Rothschild
Chapter thirteen Human Spermatozan creation in future health and disorder (pages 134–158): John Macleod
Chapter 14 Physiological techniques inquisitive about Spermatozoan shipping within the Cow (pages 159–169): N.L. Vandemark
Chapter 15 The influence of managed Ovulation upon the Fertility of the Mammalian Egg (pages 170–179): S.A. Asdell
Chapter sixteen Hormonal Mechanism of the 1st Polar physique Formation within the Follicle (pages 180–186): R. Moricard and S. Gothie
Chapter 17 examine at the Formation of the second one Polar physique within the Tube After front of the Sperm into the Oocyte: (Comparative experiences in vivo and in vitro) (pages 187–197): R. Moricard
Chapter 18 a few features of Ovulation, restoration and Transplantation of Ova within the Immature Rabbit (pages 198–216): C.E. Adams
Chapter 19 In vitro Experiments with Rabbit Eggs (pages 217–225): Audrey U. Smith
Chapter 20 Fertilizability of Rabbit Germ Cells (pages 226–242): M.C. Chang
Chapter 21 Experiments on Fertilization of Rabbit Ova in vitro with next move to Alien Does (pages 243–252): O. Venge
Chapter 22 Early loss of life of the Mammalian Ovum with precise connection with the Aplacental Opossum (pages 253–261): Carl G. Hartman
Chapter 23 a few elements Affecting Fertilization and Embryonic loss of life (pages 262–274): L.E. Casida
Chapter 24 Post?Coital exams (pages 275–286): P.M.F. Bishop
Chapter 25 result of Post?Coital checks the place being pregnant Ensued (pages 287–295): Ian Donald

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K. N. (1947). , 160, 86. EORSYTHE, W. G. C. (1948). , 161, 239. GASSNER,F. X. (1952). Recent Progr. , 7, 165. GASSNER,F. , HILL,H. , and SULZBERGER, L. (1952). Fertility and Sterility, 3, 121. GIESE, A. , and WELLS,P. H. (1952). Science, 115, 239. GOLDBLATT,&I. W. (1935). Biochem. J . , 29, 1356. , SCOTT, 1%'. ,and HEINEN,J. H. (1942). Amer. J . , 136, 467. , and WOHLBCRGS, H. (1936). Hoppe-Seyl. Z . , 239, 109. F. , and TYLER,A. (1951). Proc. Sac. exp. Biol. , 78, LORENZ, 57. LCNDQUIST, F. (1946).

Castration A bull with naturally occurring disturbance in spermatogenesis and showing high excretion of urinary steroids was castrated. I n 12 determinations before and 15 determinations after castration, it appeared that alcoholic non-ketones showed a decrease of 25 per cent after castration, as demonstrated with the Pincus antimony trichloride reaction. On the other hand, the ketosteroids, determined by the Zimmermann reaction in 25 samples before and 25 samples after castration, showed no difference.

Three other bulls were studied under similar conditions and were also found to be suffering from the effects of transport. It appeared that the central symptom of transport stress in bulls was an increased excretion of neutral steroids in the urine, with or without disturbances in spermatogenesis. Neutral steroids are largely produced by the adrenal cortex and are to some extent indicative of adrenocortical activity. Six normal healthy bulls from two to ten years of age were studied with regard to transport.

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