Anti-Ig induces release of inositol 1,4,5-trisphosphate, which mediates mobilization of intracellular Ca++ stores in B lymphocytes.
Ransom JT, Harris LK, Cambier JC. Anti-Ig induces release of inositol 1,4,5-trisphosphate, which mediates mobilization of intracellular Ca++ stores in B lymphocytes. J Immunol. 1986 Jul 15; 137(2):708-14.