type b lymphoblastic leukemiab acute lymphoblastic leukemiapre b cell lymphoblastic leukemiapre b all leukemiaacute lymphoblastic leukemia type bpro b acute lymphoblastic leukemiab lymphocytic leukemiatype b all leukemiapro b all leukemiachronic lymphocytic leukemia b cellpre b all prognosisb lymphoblastic lymphoma