title: On the influence of the hypothalamic-hypophysial system on the developing Leydig cells.
mesh_terms: D000818:Animals; D003593:Cytoplasm; D004721:Endoplasmic Reticulum; D007030:Hypothalamo-Hypophyseal System / Q000502:physiology*; D007985:Leydig Cells / Q000502:physiology* / Q000648:ultrastructure; D008297:Male; D008928:Mitochondria; D051381:Rats