Figure 1: Proliferation rates of RAW 264.7 and Maf-DKO cells in the presence and absence of M-CSF. The SRB assay for total cell protein mass was used to follow proliferation of RAW 264.7 and Maf-DKO cells in the presence and absence of L929-cell CM (MCSF). The increase in cell mass is plotted as the change in optical density at 510nm. Data represent means ± SEM of three independent experiments performed in triplicate. (*p<0.05, **p<0.01; unpaired t-test)