Effect of parasympathetic stimulants on Ca45 transfer in vitro in rat parotid glands

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Abstract
The effect of parasympathetic stimulants on the uptake and loss of Ca45 by rat parotid glands in vitro has been studied. Acetylcholine increased rate of entry of Ca45 during a 10-min exposure, as shown by increase in the residual radioactivity remaining in glands after washing for 1 hr in nonradioactive media containing atropine. Both pilocarpine and acetylcholine increased the rate of loss of Ca45 from rat parotid glands when glands previously exposed to Ca45-containing media were repeatedly transferred to Ca45-free media.