H1 and H2 histamine receptors on Aplysia neurones.
D000200:Action Potentials / Q000187:drug effects; D000818:Animals; D006632:Histamine / Q000378:metabolism* / Q000494:pharmacology / Q000502:physiology; D008974:Mollusca / Q000378:metabolism*; D009474:Neurons / Q000187:drug effects / Q000378:metabolism*; D011955:Receptors, Drug; D009435:Synaptic Transmission
D011955:Receptors, Drug; D006632:Histamine