these included antibodies to b1 and b2 , both expressed exclusively on b lymphocytes , but with the latter probably restricted to a narrow window of differentiation , bb-1 and lb-1 , both markers of activated lymphocytes , and 38.13 , a monoclonal antibody raised against and recognizing an epitope expressed on burkitt lymphoma cells .
C0003241
antibodies
C0003250
monoclonal antibody