highly significantP < 0.0001
Among the clusters of significant correlations that were identified, the most striking one was the highly significant positive correlation ( P < 0.0001; Spearman coefficient > 0.8) between all the platelet-activation markers, sCD62P and TLT1; and the platelet-derived products PDGFs, CCL5, PF4, and TGFβ1 ( Figure 5 , Supplementary Table S1 ).