Ciba Foundation Symposium - Ageing in Transient Tissues

Chapter 1 Chairman's commencing feedback (pages 1–2): E. C. Amoroso
Chapter 2 Organ tradition reviews of Foetal Rat Reproductive Tracts (pages 3–17): Dorothy fee and Richard Pannabecker
Chapter three The Age think about a few Prenatal Endocrine occasions (pages 18–30): Alfred Jost
Chapter four The Regenerative potential of Ovarian Tissue (pages 31–58): S. Zuckerman
Chapter five The heritage and destiny of Redundant Follicles (pages 59–68): P. C. Williams
Chapter 6 The Corpus Luteum of the Guinea Pig (pages 69–85): I. W. Rowlands
Chapter 7 Observations at the Cytomorphosis of the Germinal and Interstitial Cells of the Human Testis (pages 86–99): Don W. Fawcett and Mario H. Burgos
Chapter eight Mitochondrial alterations in numerous Physiological States (pages 100–104): Edward W. Dempsey
Chapter nine Morphological features of getting old within the Placenta (pages 105–117): George B. Wislocki
Chapter 10 Chronological alterations in Placental functionality (pages 118–128): A. St. G. Huggett
Chapter eleven Biochemical proof of getting old within the Placenta (pages 129–147): Claude A. Villee
Chapter 12 Uptake of Radio?Potassium (42K) by means of the Uterus and Placenta in the course of the development of being pregnant within the Rat and the Goat (pages 148–160): R. J. Harrison and J. L. D'Silva
Chapter thirteen adjustments within the Foetal improvement of the Rat After management of progress Hormone or Cortisone to the mum (pages 161–175): Herbert Tuchmann?Duplessis and Lucette Mercier?Parot
Chapter 14 the expansion Cycle of Deer Antlers (pages 176–187): George B. Wislocki
Chapter 15 getting old of the Axillary Apocrine Sweat Glands within the Human lady (pages 188–201): William Montagna
Chapter sixteen The Metabolism of Senescent Leaves (pages 202–214): E. W. Yemm
Chapter 17 The actual Instability of Human crimson Blood Cells and its attainable significance of their Senescence (pages 215–232): J. E. Lovelock
Chapter 18 growing old in Human crimson Cells (pages 233–256): P. L. Mollison

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Extra resources for Ciba Foundation Symposium - Ageing in Transient Tissues (Colloquia on Ageing), Volume 2

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Therefore this procedure was applied to the hypophysis of the rabbit foetus (Jost and Gonse, 1953). McManuspositive material accumulates in an increasing number of pituitary cells from day nineteen until day twenty-two to twenty-three and then diminishes in a significant manner; this last point will be illustrated here only by one case concerning litter mates, two of which were studied on day twenty-three and two others on day twenty-eight. The average numbers per section of distinctly stained cells, counted in three medial sagittal sections, distant 1 2 5 , were respectively 232 and 263 on day twenty-three in comparison with 65 and 77 22 ALFREDJOST on day twenty-eight.

Morph. , 42, 243. , and HATEY, J. (1949). C. R. ,Paris, 143,146. ,and JACQUOT, R. C. R. Acad. ,Paris, 239, 98. , and JACQUOT, R. (1955). Ann. , Paris, 16, 849. , and CRAMER,W. Proc. Toy. B, 80, 263. MOORE,C. R. Amer. J . , 76, 1. TURNER, C. J . e q . , 83, 1. DISCUSSION Amoroso: It is evident from Professor Jost’s account that the effects of decapitation of the foetus are many and varied, and that by utilizing this technique-so familiar in his country-he has contributed much to our understanding of the endocrine climate of the foetus.

The study of the pituitary gland in the rabbit or of the testicular interstitial cells in man, for instance, strongly suggests that such endocrine glands could pass through a period of maximal working at certain prenatal stages, followed by a period of lesser activity. It would then appear that the normal development of the foetus involves distinct endocrine events at appropriate stages. Finally, although only one example of an actually transient tissue was considered in this paper, namely the Wolffian duct, the points which were discussed cannot be considered as too far from the main object of this colloquium, if the idea will be accepted that the term " foetus " does not define a particular state of an animal but covers a succession of different transient stages leading up to each other.

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