Median EminencePituitary Gland, AnteriorPituitary GlandHypothalamus, MiddleGonadotropin-Releasing HormonePituitary Hormones, AnteriorPortal VeinPituitary NeoplasmsHypertension, PortalPituitary DiseasesPortal SystemProlactinPituitary HormonesAdrenocorticotropic HormoneGrowth HormoneThyrotropin-Releasing HormonePituitary Function TestsPituitary Gland, PosteriorPituitary ApoplexyLuteinizing HormoneSomatotrophsBlood VesselsCorticotrophsPortal PressureHypopituitarismGonadotropins, PituitaryAdenomaPro-OpiomelanocortinPituitary Adenylate Cyclase-Activating PolypeptideFollicle Stimulating HormoneLactotrophsGrowth Hormone-Releasing HormoneTranscription Factor Pit-1GonadotrophsReceptors, LHRHCorticotropin-Releasing HormoneProlactinomaThyrotropinHypothalamusPituitary Hormone-Releasing HormonesThyrotrophsFollicle Stimulating Hormone, beta SubunitPituitary ACTH HypersecretionReceptors, Pituitary Hormone-Regulating HormoneHypothalamo-Hypophyseal SystemACTH-Secreting Pituitary AdenomaRats, Inbred StrainsEstradiolRadioimmunoassayLymphatic VesselsRNA, MessengerGlycoprotein Hormones, alpha SubunitOvariectomyPituitary IrradiationDwarfism, PituitaryGrowth Hormone-Secreting Pituitary AdenomaHuman Growth Hormonebeta-EndorphinLiver CirculationRats, WistarImmunohistochemistryLuteinizing Hormone, beta SubunitRetinal VesselsSomatostatinCells, CulturedEndorphinsRats, Sprague-DawleySella TurcicaThyrotropin, beta SubunitHypophysectomybeta-LipotropinSheepHyperprolactinemiaCastrationInhibinsReceptors, Thyrotropin-Releasing HormoneGonadotropinsErgolinesCoronary VesselsThyroxineReceptors, Pituitary HormoneArginine VasopressinDiabetes InsipidusEstrusCorticosteroneTime FactorsNeuropeptidesPituitary-Adrenal SystemBromocriptineIn Situ HybridizationHydrocortisonePortasystemic Shunt, SurgicalAdenoma, ChromophobeDiabetes Insipidus, NeurogenicReceptors, Pituitary Adenylate Cyclase-Activating PolypeptideEstrogensSplenic VeinCattleReceptors, NeuropeptideMesenteric Veins