title: Acute lymphoblastic leukemia of B cell origin.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001402:B-Lymphocytes / Q000166:cytology / Q000276:immunology* / Q000648:ultrastructure; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D007945:Leukemia, Lymphoid / Q000201:enzymology / Q000209:etiology* / Q000276:immunology / Q000473:pathology; D008297:Male; D008875:Middle Aged; D013194:Staining and Labeling