Figure 5.

(a) Surviving fraction of the A431 cells treated with or without BSH (200 nM), Z33-DB (200 nM), cetuximab (100 nM), and EGF (100 nM) for 24 h at 37 °C, prior to thermal neutron irradiation (90 min), and a colony assay, as described in the Experimental Section. The data are expressed as the mean (±SD) of three experiments. (b) Surviving fraction of A431 cells in the same experimental conditions (thermal neutron fluence 3.7 × 10⁷). The data are expressed as the mean (±SD) of three experiments. *P < 0.05, **P < 0.01.