In 1944 Taurog, Entenman, and Chaikoff (13) reported that the ratio of choline to phosphorus in the acetone-insoluble lipides of human and dog plasma was close enough to 1.0 to justify the conclusion that cephalin was almost, if not entirely, absent. Although instances of the absence of cephalin from plasma had been reported before (1, 8, 14), most of the earlier work (cited in (13)) had indica...

The activity of intact cells or of extracts from cells may be studied in blood coagulation systems to elucidate the problems of coagulation or to investigate the properties of cells and their extracts. The present report is concerned primarily with the latter objective. Since the beginning of this century aqueous extracts of cells have been known to accelerate clotting. In 1916 McLean prepared ...

(1) The characteristics of the lipids (acetone-soluble lipid, lecithin, cephalin and sphingolipid) obtained from barracuda, Sphyraena pinguis GUNTHER, were studied from the view point of fat metabolism of fish. (2) Forty-one fresh sample fish caught in the Komekami fishing ground near Odawara City (west part of Kanagawa Prefecture, Japan) on the 4th of October, 1959, were extracted with acetone...