Growth of fresh volumes and spontaneous cell death in the nuclei habenulae of albino rats during ontogenesis.
The growth of the nuclei habenulae medialis et lateralis of albino rats is described by monotonically increasing growth curves of fresh volumes during ontogenesis. The nucleus habenulae medialis matures earlier than the nucleus habenulae lateralis in the perinatal period. However, the two nuclei reach their final volume at about the same time. Simultaneous electron microscopic investigation reveals the phenomenon of spontaneous nerve cell degeneration within the nuclei habenulae during ontogenesis in spite of the non-overshooting growth curves for the habenular nuclei.
D000818:Animals; D001921:Brain / Q000196:embryology* / Q000648:ultrastructure; D002470:Cell Survival; D008297:Male; D008433:Mathematics; D008854:Microscopy, Electron; D009410:Nerve Degeneration; D051381:Rats / Q000196:embryology*; D013997:Time Factors