GonadotrophsPituitary Gland, AnteriorPituitary GlandThyrotrophsGonadotropin-Releasing HormoneLuteinizing HormoneCatfishesReceptors, LHRHLuteinizing Hormone, beta SubunitGonadotropins, PituitaryFollicle Stimulating Hormone, beta SubunitPituitary Adenylate Cyclase-Activating PolypeptideGlycoprotein Hormones, alpha SubunitSomatotrophsPituitary Hormones, AnteriorBuserelinGonadotropinsCorticotrophsPituitary HormonesFollicle Stimulating HormoneNeuropeptidesOvariectomyProlactinInositol 1,4,5-TrisphosphateOscillometryCalciumAnestrusCells, CulturedOrchiectomyEstradiolCytoplasmic GranulesSheepRats, Sprague-DawleyHorsesEstrusExocytosisCalcium ChannelsGrowth HormoneCyclic AMPSeasonsTime FactorsImmunohistochemistryRNA, MessengerMembrane PotentialsKineticsCalcium SignalingRats, Inbred StrainsElectrophysiologyCell CountSignal TransductionDose-Response Relationship, DrugGene Expression RegulationCell Membrane