Fig. 5. Effect of Hym-301 on the number of tentacles formed (A), and the rate of hypostome formation (B) during head regeneration. Both figures represent regenerates treated with the Hym-301 peptide (black circles) and controls (white circles). Each data point is the average value±s.e.m. for three experiments. Fifteen to 20 regenerates were used in each of the experiments.