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Cell proliferation in the developing rat pineal gland. A bromodeoxyuridine immunohistochemical study
J L Calvo1, J Boya, A L Carbonell
1Department of Histology, Faculty of Medicine, Complutense University, Madrid, Spain.
Abstract:
The immunohistochemical detection of bromodeoxyuridine (BrdU) was used to study the cell proliferation in the developing rat pineal gland, from the appearance of pineal primordium in the embryonic day 15 (E15) until 30 days after birth. The results showed three different proliferative phases. From E15 to E21, the pineal gland shows a phase of rapid proliferation. The second phase corresponds to the first postnatal week, in which the number of labeled cells per surface unit decreases suddenly to values between 20% to 10% of those of embryonic period. From the second postnatal week onwards, the number of BrdU-positive cells progressively decreases.
