Platelet activation
ADHESION
The next step in PRP characterization was immunophenotyping with antibodies to the general platelet marker CD61 (platelet glycoprotein IIIa) and platelet activation markers CD63 (a member of tetraspanin superfamily) and P-selectin (cell adhesion molecule; Fig. The low content of CD63 positive (and, accordingly, CD63/P-selectin double-positive) platelets in PRP (< 1% in all samples, Fig. 