membrane Ca2+ fluxes during stimulation of amylase release. Lanthanum is known to
inhibit Ca2+ fluxes across artificial membranes as well as the plasma membrane of heart
cells, smooth muscle and nerve (van Breeman & van Breeman, 1969; Weiss & Goodman,
1969; van Breeman & De Weer, 1970; Langer & Frank, 1972; van Breeman, Farinas,
Casteels, Gerba, Wuytack & Deth, 1973). In addition, it is thought to displace tightly bound …