Splenic macrophages in Gaucher's disease differ from those in ceroid histocytosis by staining positive for -

Ans. is 'a' i.e., Lipid In Gaucher's diease there is accumulation of Gaucher cells that Contain glucocerebroside which is a lipid (glycolipid) In ceroid histocytosis there is accumulation of lipofuscin (ceroid), a yellow brown cytoplasmic pigment, in the histiocytes.