In accordance with our functional studies on permeability, no difference in the levels of mRNA encoding tight junctions proteins (Cldn1, Zo1, Ocln) and inflammatory cytokines (Il1b, Tnfa, Il6) was observed in the jejunum, ileum, or proximal colon between glioma-bearing and healthy mice (Figure S2). The gene discussed is IL6; the disease is glioma.