Relaxin-3 Dopamine receptor Relaxin family peptide hormones Relaxin Dopamine receptor D2 Relaxin receptor Dopamine receptor D1 Dopamine receptor D3 Dopamine receptor D5 Relaxin/insulin-like family peptide receptor 1 Relaxin/insulin-like family peptide receptor 3 Dopamine receptor D4 Relaxin/insulin-like family peptide receptor 2 Relaxin/insulin-like family peptide receptor 4 Pregnancy hormones Neohormone Neuromodulation Paraventricular nucleus of hypothalamus Rhodopsin-like receptors D1-like receptor D2-like receptor List of biomolecules Monoamine receptor Cholecystokinin B receptor Norepinephrine TAAR1 Hy…

ypothalamic–pituitary–prolactin axis Insulin-like growth factor TAAR2 Neurohormone Signaling peptide receptor Hypothalamic–pituitary hormone 5-HT2C receptor GPR139 Growth hormone secretagogue receptor Adenosine A2A receptor Olfactory tubercle 5-HT1A receptor Κ-opioid receptor Histamine H3 receptor Muscarinic acetylcholine receptor M4 Prolactin Metabotropic receptor Nociceptin receptor Hypothalamus Hi

stamine receptor Neurotensin receptor 2 Adrenaline Adenosine receptor Prostaglandin D2 receptor TAAR6 Melanin-concentrating hormone Cannabinoid receptor 2 TAAR5 Prolactin-releasing peptide receptor Pancreatic polypeptide receptor 1 Somatostatin receptor 5 Prostaglandin EP1 receptor Alpha-1D adrenergic receptor Cannabinoid receptor 1 5-HT2B receptor Hydroxycarboxylic acid receptor 2 Cholecystokinin A receptor 5-HT2A receptor Alpha-1B adrenergic receptor Adrenocorticotropic hormone GHB receptor Ghrelin Gonadotropin-releasing hormone 5-HT receptor Metabotropic glutamate receptor 7 5-HT6 receptor Somatostatin receptor 2 Endocrine system Melanopsin Alpha-2 adrenergic rece