Figure 6. Conditioned medium-stimulated growth of SK-N-SH cells is inhibited with anti-gastrin-releasing peptide (GRP) antibody. The cells maintained with conditioned medium significantly increased growth at 48 hours. Further, anti-GRP antibody significantly blocked the growth effect of cells plated in the conditioned medium. Mean ± SEM for triplicate determination; *P < .05 vs. control, †P < .05 vs. conditioned medium alone.