Abstract
Summary
Denervation and decentralization of the nictitating membrane produced a 7-fold increase in sensitivity to barium. The action of barium was not mediated via the release of endogenous norepinephrine. This supersensitivity to barium is consistent with the hypothesis that the postsynaptic form of supersensitivity in smooth muscle is the result of a functional change beyond the level of drug receptors, perhaps in membrane properties.
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