B ALL is due to-: (A) T cells, (B) Immature B cells, (C) Immature T cells, (D) Both T & B cells
Answer is B. ALL are neoplasms composed of immature B (pre B) or T ( pre T) cells which are referred to as lymphoblasts. About 85% are B ALLs which typically manifest as childhood acute leukemias Ref: Robbins and Cotran Pathologic basis of disease.South Asia Edition volume 1.page no,.590