Figure 3

Statistical analysis of pigmented skin abnormalities (PSA). A: Overview of the inner side of skins from HDGF^Tyr/Ink4a^+/-, Ink4a^+/-, and HDGF^-/-/Ink4a^+/- mice showing PSA. Scale bar equates 1 cm. B: Statistical analysis of the occurrence of (PSA) of the different genotypes. HDGF^Tyr/Ink4a^+/- n = 23, Ink4a^+/- n = 24; HDGF^-/-/Ink4a^+/- n = 23. C: Chi-square contingency table was applied for the category: largest PSA was ≤ 1mm or > 1mm. Contingency tables were carried out for the following pairs of genotypes: HDGF^Tyr/Ink4a^+/- - HDGF^-/-/Ink4a^+/- and Ink4a^+/- - HDGF^-/-/Ink4a^+/-. Analysis was regarded significant for p < 0.01.