Nf2;Notch2+/− and Nf2;Notch2 mice do not suffer severe liver damage. (a) Serum total bilirubin levels, (b) serum alanine aminotransferase (ALT) activity, (c) serum total bile acids levels in 8-week-old control, Nf2, Nf2;Notch2+/− and Nf2;Notch2 animals. Bars represent mean ± s.e.m. (n =3 mice from each genotype). *P<0.05, compared with control, #P<0.05, compared with Nf2, one-way ANOVA and Fisher's LSD. (d and e) Liver fibrosis evaluation of 8-week-old control, Nf2, Nf2;Notch2+/−, and Nf2;Notch2 animals with Sirius Red staining, a method detecting collagen deposition.