FIG. 3.

Induction of immunotoxin sensitivity. ACH-2 cells were grown with no inducer or with 100 nM concentrations of the indicated compounds in the presence or absence of 5 nM 3B3:N31H/Q100eY(dsFv)-PE for 5 days. (A) Cell viability was assayed by the MTT oxidation procedure, and the percentage of cell killing was calculated relative to that with untreated cells. (B) Annexin V binding was assayed by fluorescence-activated cell sorting.