title: Genetic endowment, biological clocks, regulatory mechanism, and environmental influences as determinants affecting ontogeny of the gastrointestinal tract.
mesh_terms: D000818:Animals; D001683:Biological Clocks; D004064:Digestive System / Q000196:embryology*; D004186:Disaccharidases / Q000378:metabolism; D005260:Female; D005786:Gene Expression Regulation; D005838:Genotype; D006728:Hormones / Q000097:blood; D006801:Humans; D008431:Maternal-Fetal Exchange; D011247:Pregnancy; D051381:Rats
chemical_list: D006728:Hormones; D004186:Disaccharidases