Figure 5
From: Complement activation in astrocytomas: deposition of C4d and patient outcome
![Figure 5](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1471-2407-12-565/MediaObjects/12885_2012_Article_3460_Fig5_HTML.jpg)
Box-plot of C4d positive tumor area fractions (C4d EXT) in grade I-IV astrocytomas. The C4d EXT groups: 1 = no positivity, 2 = 2% or less positive tissue, 3 = more than 2% positive tissue. (p = 0.041, Mann–Whitney U-test.).