Marker for hairy cell leukaemia is?: (A) CD30, (B) CD 103, (C) CD 1, (D) CD4
Answer is B. Hairy cell leukemia express CD 19 ,CD2O, CD22 antigen. In addition to Bcell markers they are also positive for CD11,CD25,CD103 Reference : Harsh Mohan textbook of pathology, 7th edition.Pg no.358