Observations on fibrin thrombi produced by endotoxins: an experimental study.

picro-Mallory, phosphotungstic acid haematoxylin and for reticulin. The numbers of thrombi seen in each organ were graded by the same method as that used by McKay and Shapiro (1958) and ranged from + where only an occasional thrombus was present, to + + + + where widespread thrombosis had occurred.