Figure 7From: Dictyostelium cells bind a secreted autocrine factor that represses cell proliferationEndogenous AprA competes with rAprA for binding to cells. The binding of rAprA to aprA- cells was measured in the presence of the indicated concentrations of wild-type conditioned growth medium from cells at 107 cells/ml, where the AprA concentration is 0.3 μg/ml. Values are mean ± SEM (n = 4). The line is a curve fit of a sigmoidal dose response curve.Back to article page