SRC and sarcoma: In this pathway, sarcoma, a tyrosine-protein kinase (Src) family member such as Lyn, Fyn, and Src, is first activated by phosphorylation, activated Syk, then phosphorylate and activated LAT, which in turn causes the phosphorylation of the adaptor protein PLCγ2 in which protein kinase C (PKC) bind leads to the activation of downstream effector, which induces platelet granule secretion.