The levels of protease nexin-1 (PN-1) mRNA were determined by real-time RT-PCR from healthy individuals (N), individuals with mild/moderate dysplasia (M/M), severe dysplasia (S) or carcinomas (C). Symbols and group designations are the same as in Figure 1. mRNA levels were normalised to the β-actin mRNA level. The box shows the interquartile range, the whiskers the range and the median is indicated by a vertical line.
Selzer-Plon et al. BMC Cancer 2009 9:201 doi:10.1186/1471-2407-9-201