TABLE 4.

Colony number

The mean value ± S.D. of three determinations is indicated using NCI-H838 cells. This experiment is representative of three others.

Addition	Colony Number
None	15 ± 2
PACAP-27, 10 nM	27 ± 3**
PACAP(6–38), 10 μM	9.5 ± 0.7*
PACAP + PACAP(6–38)	17 ± 2.2
Gefitinib 1 μg/ml	7.7 ± 1.7**
PACAP + gefitinib	10.7 ± 1.4*
PACAP(6–38) + gefitinib	2.7 ± 0.3**

^* P < 0.05;

^** P < 0.01, by ANOVA.