“Mg++ rich medium shifted the dose-response curve of terbutaline to the left and the pre-incubation with Mg++ increased the inhibitory effect of terbutaline on the tonic part of K-contracture.”
“The results indicated that human myometrium might be constructed of plural muscle bundles with different characteristics, and Mg++ inhibited the spontaneous contraction by affecting the membrane activities and enhanced the terbutaline effect by penetrating into the membrane.”