title: Embryonic development of the pig: ultrastructure and uptake of macromolecules during early pregnancy.
mesh_terms: D000818:Animals; D001692:Biological Transport; D004622:Embryo, Mammalian / Q000378:metabolism / Q000648:ultrastructure*; D005314:Embryonic and Fetal Development; D005260:Female; D046911:Macromolecular Substances; D011247:Pregnancy; D011270:Pregnancy, Animal; D013552:Swine / Q000196:embryology*
chemical_list: D046911:Macromolecular Substances