Annulate lamellae in rete ovarii of juvenile rabbits.

Annulate lamellae, though few, were observed in the epithelial cells of rete ovarii of 1-month-old rabbits, but not of other-aged juvenile rabbits examined. There were little differences in the fine structural details between the rete ovarii with annulate lamellae and those without annulate lamellae. Most rete ovarii cells were undergoing atrophy. This finding suggests that annulate lamellae may be quite ordinal, transitory organelles common to virtually all cell types.