Table 3.

Results RIA assay before and after rituximab and chlorambucil treatment

Sample	% Binding factor X-biotin
Blank 0.3% BSA	7.0
Healthy control 1:50	6.7
Patient BT 1:50	12.2
Patient BT 1:250	8.1
Patient AT 1:50	6.6
Patient AT 1:250	5.3

BT, before treatment; AT, after treatment.