title: Effect of tobacco chewing by mothers on placental morphology.
mesh_terms: D001724:Birth Weight; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D009929:Organ Size; D010920:Placenta / Q000033:anatomy & histology*; D010947:Plants, Toxic; D011247:Pregnancy; D014026:Nicotiana