Figure 1
![Figure 1](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1471-2121-8-20/MediaObjects/12860_2006_Article_20_Fig1_HTML.jpg)
Cell morphology and cell growth rates of MPF and PF cells. A. Representative cell morphology of MPF and PF cells in early (passage 3; P3) and late passages (passage 60; P60) (40× magnifications). B. Relative growth rates of MPF and PF cells at an early passage (P3) grown in 10% and 0.5% FBS-DMEM as determined by staining cells with crystal violet solution every 2 days for 6 days. Data shown are means ± SEM (n = 3). Asterisk (*) indicates a significant difference between MPF and PF cells grown in the 10% FBS-DMEM (p < 0.05). C. Relative growth rates of MPF and PF cells at a late passage (P60) grown in 10% and 0.5% FBS-DMEM. Data shown are means ± SEM (n = 3). Asterisk (*) indicates a significant difference between MPF and PF cells grown in the 10% FBS-DMEM (p < 0.05).