Fig. 2
From: Ontogeny of alkaline phosphatase activity in infant intestines and breast milk
![Fig. 2](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12887-018-1379-1/MediaObjects/12887_2018_1379_Fig2_HTML.png)
Alkaline phosphatase activity of breast milk as a function of time. Average ALP units in breast milk samples obtained in postnatal days 2–5, week 2 (days 8–13), week 3–4 (days 17–22) and week 6–7 (days 40–49). Error bars represent standard deviation and n is sample size. All coefficients in the model are statistically significant at the p < 0.001 level using a mixed-effects regression model in which model coefficients represent the difference between the ALP activity in the first week and ALP activity in week 2, week 3–4, and week 6–7