in order to determine the best time to obtain complement for use in marrow purging in vitro , we have used 51cr-release and limiting dilution assays ( lda ) to evaluate the ability of serum from rabbits 20-30 ( 25d ) , 30-40 ( 35d ) and 40-50 ( 45d ) days old to lyse a series of neoplastic target cells in the presence of complement activating antibodies .
C0009498
complement
C0229671
serum