title: Fine structure and progesterone concentration in the corpus luteum of the African elephant.
mesh_terms: D000818:Animals; D001667:Binding, Competitive; D002462:Cell Membrane; D002467:Cell Nucleus; D003094:Collagen; D003338:Corpus Luteum / Q000032:analysis / Q000166:cytology*; D003593:Cytoplasm; D004606:Elephants / Q000033:anatomy & histology*; D004721:Endoplasmic Reticulum; D004971:Estrus; D005260:Female; D006056:Golgi Apparatus; D006654:Histology, Comparative; D008854:Microscopy, Electron; D008928:Mitochondria; D011247:Pregnancy; D011374:Progesterone / Q000032:analysis*; D011485:Protein Binding; D011869:Radioligand Assay; D013997:Time Factors
chemical_list: D011374:Progesterone; D003094:Collagen