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monoclonal B-cell lymphocytosis

(MAH-noh-KLOH-nul B-sel LIM-foh-sy-TOH-sis)
A condition in which a higher-than-normal number of identical B cells are found in the blood. People with monoclonal B-cell lymphocytosis may develop other B-cell diseases, such as chronic lymphocytic leukemia (CLL). Also called MBL.
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