Calcium Signaling provides a review of the salient points of knowledge relating G proteins to calcium mobilization in a variety of cells including blood cells, (e.g. platelets, neutrophils, lymphocytes) liver, pancreas, cardiac tissue, pituitary cells, olfactory cilia, photoreceptors and the major elements of the transmembrane transduction processes is an important addition to the libraries of biological chemists, cell biologists, physiologists, pharmacologists and biophysicists among others.