“However, the release of … B. Cytochalasins B and D (0.5-1 microM) markedly reduce, … platelets, the metabolism of the liberated arachidonic acid by cyclooxygenase activity to thromboxane B2 and 12-hydroxy-5,8,10-heptadecatrienoic … acid by lipoxygenase activity to 12-hydroxy-5,8,10,14-icosatetraenoic acid.”