Figure 5: Phagocytic activity of peritoneal macrophages from knockout mice. Phagocytic activity of macrophages from wild type C57BL/6 (black bar), TLR2 -/- C57BL/6 (grey bar), TLR4-/- C57BL/6 (dark-grey bar), and MyD88-/- C57BL/6 (light-grey bar) mice stimulated previously with Lactobacillus casei CRL 431 by 7 consecutive days of administration and probiotic fermented milk, 5 consecutive days of administration. a,b,c,dMeans values for peritoneal macrophages without a common letter differ significantly (P<0.05). The error bars indicate standard deviations for 3 independent determinations per mouse.