Kinetic parameters of morphine and azidomorphine derivatives as well as methionine enkephalin methylester were determined on the electrically stimulated isolated medial smooth muscle of the cat nictitating membrane. The organ was found to be a promising in vitro model for testing the action of opiate agonists on opiate B receptors.
- Nictitating membrane of cat
- Noradrenergic neurotransmission
- Opiate receptors
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