Correlation between the maturational appearance of adult-type epithelium in the proximal and the distal SI.

<p>Appearance of FcRn<sup>neg</sup> cells in the proximal SI and non-vacuolated cells in the distal SI in 17 days old rats treated with PHA or protease for 3 days, to induce precocious gut maturation, compared to control rats.</p>