ALL , morphology is a malignancy arising from which cell lineage -: (A) Mature B cell, (B) Precursor B cell, (C) Immature T cell, (D) Mixed B cell & T cell
Answer is D. Acute Lymphoblastic Leukemia/ Lymphoma (ALLs) are neoplasms composed of immature B ( pre-B) or T(pre-T) cells ,which are referred to as lymphoblasts. Ref :Robbins pathologic basis of disease ; south east asia edition ;pg:590