Platelet agonists, including ADP, collagen, and thrombin as well as CHRONO-LUME® were purchased from Chrono-log (Havertown, PA). Collagen related peptide (CRP) was a gift from Dr. Peter Newman (Blood Research Institute, WI) as mentioned before.24 (link) Antibodies to phosphorylated AKT (4060S), pan-AKT (2920S), TYMP (4307S), and GST (2624S) were purchased from Cell Signaling Technology (Danvers, MA). Antibodies to TYMP (SC-56584), Lyn (SC-7274), and Actin (sc-8432) were purchased from Santa Cruz Biotechnology (Dallas, TX). Antibody to TYMP was also purchased from abcam (ab180783). FITC-conjugated P-selectin antibody (Cat#553744) and the isotype control IgG were purchased from BD Biosciences (San Jose, CA). Tipiracil hydrochloride (TPI) (T2366) was purchased from TargetMol (Boston, MA). All other chemical reagents were purchased from Sigma (St. Louis, MO) except where specifically indicated.