title: Rectal Glands of Marine and Fresh-Water Sharks: Comparative Histology.
abstract: The rectal glands of elasmobranchs perform the function of salt-excreting organs. These glands are smaller and show regressive changes in specimens of the bull shark, Carcharhinus leucas found in fresh-water environment, compared with specimens of this and other species from a marine habitat.
authors.forename: M
authors.initials: M
authors.lastname: Oguri