TY - RPRT TI - Guanine nucleotides decrease the free [Ca2+] required for secretion of serotonin from permeabilized blood platelets. Evidence of a role for a GTP-binding protein in platelet activation. AU - R J Haslam AU - M M Davidson PY - 1984 DO - 10.1016/0014-5793(84)81084-4 UR - https://pubmed.ncbi.nlm.nih.gov/6088288/ ID - 6088288 ER -