Medical Definition of H1 receptor
: a receptor for histamine on cell membranes that modulates the dilation of blood vessels and the contraction of smooth muscle — see h1 antagonist
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“H1 receptor.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/H1%20receptor. Accessed 4 Mar. 2021.
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