FIG. 6.

Ratio of the number of CD4 CD8 cells to that of CD4⁻ CD8⁺ cells among αβBIEL in the large intestines of GF mice, SFB-mice, Clost-mice, mice associated with both SFB and clostridia (SFB + Clost), and Cvd mice. The data are means plus the standard deviations (n = 3 or 4) and were reproducible in the experiment involving the first generation. The letters b, c, and d indicate statistically significant differences from the Clost, SFB + Clost, and Cvd groups, respectively. Single letter, P < 0.05; double letters, P < 0.01.