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Digitale Medien

Sex steroids and epidermal glands in two species of gekkonine lizards (1975)

Chiu, K. W. ; Maderson, P. F. A. ; Alexander, S. A. ; [weitere]

New York, NY : Wiley-Blackwell

Journal of Morphology 147 (1975), S. 9-21

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ISSN: 0362-2525

Schlagwort(e): Life and Medical Sciences ; Cell & Developmental Biology

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Biologie , Medizin

Notizen: In vivo and in vitro experiments on the endocrine relationships of epidermal glands in the tokay Gekko gecko, and the common house gecko Hemidactylus bowringii are reported. The results show that certain aspects of ß-gland differentiation involve a synergistic action between androgens and those hormones responsible for controlling the normal shedding cycle, while other aspects are solely under androgenic control. Pre-anal organ activity appears to be solely under androgenic control.

Zusätzliches Material: 3 Tab.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jmor.1051470103

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Digitale Medien

The microscopic anatomy of epidermal glands in two species of gekkonine lizards, with some observations on testicular activity (1975)

Chiu, K. W. ; Maderson, P. F. A.

New York, NY : Wiley-Blackwell

Journal of Morphology 147 (1975), S. 23-39

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ISSN: 0362-2525

Schlagwort(e): Life and Medical Sciences ; Cell & Developmental Biology

Quelle: Wiley InterScience Backfile Collection 1832-2000

Thema: Biologie , Medizin

Notizen: The gross and microscopic anatomy of epidermal glands has been studied in laboratory maintained tokays (Gekko gecko), and house geckos (Hemidactylus bowringii) captured from the wild throughout the year. Annual testicular activity in the house gecko has also been studied. While no significant differences in glandular development at various times have been observed in G. gecko, there are clear-cut annual cycle in H. bowringii. The evolution of epidermal glands in gekkonid lizards is reviewed; the cellular dynamics of β-glands are compared with those of unspecialized epidermis; the possibility that gekkonine epidermal glands respond to quantitative variation in circulating testosterone titers is discussed.

Zusätzliches Material: 1 Ill.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1002/jmor.1051470104

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Digitale Medien

The snake thyroid gland V. effects of hypophysectomy on iodine metabolism in the striped racer,Elaphe taeniura (1979)

Wong, C. C. ; Chiu, K. W.

Springer

Journal of comparative physiology 131 (1979), S. 297-302

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ISSN: 1432-136X

Quelle: Springer Online Journal Archives 1860-2000

Thema: Biologie , Medizin

Notizen: Summary Thyroidal iodine metabolism in the hypophysectomized snake,Elaphe taeniura, was examined in vivo and in vitro using125I. Hypophysectomy decreased, and TSH increased, both in vivo and in vitro thyroidal accumulation and uptake of radioiodine, and the amount of all labelled substances in the thyroid gland. The operation also altered the distribution of the relative amounts of labelled iodoamino acids in vivo, but not in vitro; nor was there any effect on release of these labelled substances in vitro. In view of the paucity of information available on poikilothermic species, the data are discussed in relation to those of hypothysectomized rats.

Materialart: Digitale Medien

URL: http://dx.doi.org/10.1007/BF00688804

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