these results suggest that 1 ) alpha-adrenergic and cholinergic signal transduction mechanisms for k+ efflux and 45ca2+ release are dissociated in cells of the rat parotid gland , and 2 ) following alpha 1-adrenergic stimulation , signal transduction likely proceeds by at least two pathways , one which is apparently involved in protein excytosis ( intact in cells from old rats ) and the other which is apparently involved in k+ efflux and 45ca2+ release ( perturbed in old cells ) .
C0037083
signal transduction
C0007634
cells