fetal ovary: oocyte development micrograph depicting leptotene and pachytene stages

biology chromosome people color nucleus histology meiosis horizontal microscopic research science tissue ovary reproductive female microscopy mobile phone biological cell living organism oocyte scientific micrograph anatomy backgrounds blood chart diagram growth illness laboratory lung medicine microbiology microscope sketch stained textured vertical dividing engraving fish history ireland lily medical exam oldfashioned photosynthesis scrutiny antique art fetal ovary: development depicting leptotene pachytene stages