Figure 2. Impact of treatment conditions on RPC viability. Cells were plated at 1×104 cell/well and cellular viability assessed using a formazan-based assay after three days exposure to the media compositions
used in the current study. These consisted of no added growth factors, 10 ng/ml CNTF alone, 10% FBS alone, 20 ng/ml EGF alone,
EGF in combination with CNT, and EGF in combination with FBS. Optical density at 450 nm is proportional to cell number. The
error bars show standard deviation.