it is unknown whether other b-cell leukemias such as prolymphocytic leukemia ( pll ) , lymphoplasmacytoid immunocytoma ( ic ) , and hairy cell leukemia ( hcl ) involve different b lineages or are malignant variants of b cells in successive stages of development along the same lineage .
C0475801
b-cell leukemias
C0004561
b cells