Figure 3

IgA+ cells in the small intestine of newborn mice. IgA+ cells were determined by direct immunofluorescence on slides from small intestine of mice of different ages of life (12, 21, 28 and 45 days). Results are expressed as number of positive cells per 10 fields of vision at 1000× of magnification. Values are means for n = 15 ± SD. Mice from each exprimental group (mice from mother did not received PFM and they did not receive PFM (Aa) or they received PFM after weaning (Ab); mice from mothers given PFM during suckling period and they did not receive PFM (Ba) or they received PFM (Bb) after weaning. Means for each value without a common letter differ significantly (P < 0.05).