• hypothalamus
  • There is good evidence to indicate that the temporal organization of PRL secretion also is partially controlled by circadian rhythmicity, a sleep-independent endogenous oscillation with a near-24-h periodicity generated in the suprachiasmatic nuclei of the hypothalamus ( 8 , 27 ). (physiology.org)
  • cell
  • The present study examined the morphology of the FS and lactotroph cell populations and their distribution in the sheep pituitary during the annual reproductive cycle. (ox.ac.uk)
  • NBS) and were prepared for quantitative electron microscopy to assess the effects of season on FS and lactotroph cell density, morphology and distribution, as well as on junctional contacts between cells. (ox.ac.uk)
  • plasma
  • To delineate the contributions of genetic and environmental factors in the regulation of human prolactin (PRL) secretion, the 24-h profile of plasma PRL was obtained at 15-min intervals in 10 pairs of monozygotic and 10 pairs of dizygotic twins. (physiology.org)