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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...
Lead may exert toxic effects on several organ systems, but those in the lung are the most insidious. Therefore the aim of the present study was to investigate the morphological alterations caused by l...