FIG. 4.
(A) Effect of consumption of a peptidic fraction derived from L. helveticus-fermented milk on the intestinal lamina propria IgA+ B cells of mice infected with E. coli O157:H7. Values are means for n = 4 (± standard deviations), and significance was determined by comparison to the infected control (*, P < 0.05; **, P < 0.01). (B and C) Images of IgA+ B cells in the small intestine on day 10 postinfection of the infected control (B) and mice that received the 7-day feeding (C). Magnification, ×100.