PGLYRP1 and colitis: A. finegoldii, whose abundance was decreased in colitis-sensitive Pglyrp-deficient mice, attenuated DSS-induced colitis when its abundance was increased in WT mice with intact intestinal microflora or when it was administered together with a colitis-predisposing bacterium, B. eggerthii. These results are consistent with decreased abundance of Alistipes sp.