In the process of blood coagulation under blood flow conditions, jelly-like clots resembling fibrin gel may be formed in a number of cases. The results obtained in vitro are consistent with clinical observations in patients with blood coagulation system disorders.
More details see in the article [in Russian]: Uzlova S.G., Guria K.G., Shevelev A.A., Vasilyev S.A., Guria G.Th. Acoustically detectable intravascular microclots as precursors of postoperative complication // Cardiovascular diseases. 2008; 6:55-64.