title: The hypothalamo-hypophysial system in Acipenseridae. VIII. Quantitative electron microscopic study of the functional state of neurosecretory terminals in the neurohypophysis of Acipenser güldenstädti Brandt during upstream migration and after spawning.
mesh_terms: D000818:Animals; D002462:Cell Membrane / Q000648:ultrastructure; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D005260:Female; D005399:Fishes / Q000033:anatomy & histology* / Q000502:physiology; D009411:Nerve Endings / Q000648:ultrastructure*; D009489:Neurosecretion; D010058:Oviposition; D010904:Pituitary Gland, Posterior / Q000294:innervation / Q000648:ultrastructure*; D013572:Synaptic Vesicles / Q000648:ultrastructure