TLR6 and COVID-19: Interestingly, for transcripts related to platelet-leukocyte mediated interactions, platelet-CD40, but not -SELP, -CD40LG or -SELPLG, were associated with the most PRRs in the COVID19-patients’ platelets (TLR2, TLR6, RIG-I, MDA5, and LGP2).