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The Effects of Constant Darkness and Constant Light on the Pineal Gland and Thymus Morphology in the Rats
Photoperiodicity pineal gland immune system morphometry rat
2009/7/3
It is known that periods of constant darkness and constant light cause stim-ulation and inhibition of melatonin secretion from the pineal gland. It is also suggested that neuroendocrine responses to e...
Role of the pineal in the alteration of hamster Sertoli cell responsiveness to FSH during testicular regression
pineal hamster Sertoli cells testicular regression short photoperiod optic enucleation
2009/2/20
Testicular regression was induced in adult hamsters by optic enucleation, short photoperiod, or melatonin injections. The melatonin injected group, while undergoing testicular regression, showed a q...