Changes to the composition of breast milk through the first month of lactation.

<p>Line shows the median value for that milk sampling time point. Data show A) concentrations of total CD45+ cells in colostrum (C), transitional milk (TM) or mature milk (MM); B-L) frequencies of leukocyte subsets in colostrum (C), transitional milk (TM) and mature milk (MM) from all donors. *p<0.05 in post-test comparing different stages of lactation; for each comparison, number of symbols indicates p-value (*p<0.05, **p<0.01, ***p<0.001).