title: Influence of photoperiod on the ultrastructure of the hypophysial pars tuberalis of the Djungarian hamster, Phodopus sungorus.
abstract: Conspicuous cytological differences are found between specific secretory cells of the hypophysial pars tuberalis of Djungarian hamsters exposed to long and short photoperiods. The cells differ with respect to the shapes of perikarya and nuclei and show diverse amounts of secretory granules, lysosome-like bodies and glycogen.
mesh_terms: D000818:Animals; D006224:Cricetinae / Q000033:anatomy & histology*; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D008027:Light; D008297:Male; D008854:Microscopy, Electron; D010902:Pituitary Gland / Q000648:ultrastructure*; D013997:Time Factors