Netrin-1 Peptide Is a Chemorepellent in Tetrahymena thermophila

Figure 3

Avoidance of netrin-1 peptide is inhibited by the tyrosine kinase inhibitor, genistein (closed squares), but not by daidzein (closed circles). The IC₅₀ of genistein is approximately 50 μg/mL. Baseline avoidance was achieved at a genistein concentration of 75 μg/mL. Daidzein had no effect on avoidance behavior. Percentages represent the mean ± standard deviation of at least 6 trials. Each trial consisted of 10 cells which were individually observed and scored for avoidance.