Mucosubstance histochemistry in control and acid-stressed epidermis of brown bullhead catfish, Ictalurus nebulosus (LeSueur).

Glycoprotein components of epidermal mucous cells in control (pH 6.8) and acid-stressed (pH 5.8, 4.

Morphological survey of teleost organs important in carcinogenesis with attention to fixation.

Key features of the gross and microscopic anatomy of teleost liver, digestive tract, kidney, and skin were reviewed from the world literature. Illustrations of the above and new findings were obtained from light as well as scanning and transmission electron micrographs of tissues from 7 freshwater fish species: Alosa sapidissima, American shad; Esox lucius, northern pike; Lepomis macrochirus, bluegill sunfish; Pimephales promelas, fathead minnow; Stizostedion vitreum, walleye; Oryzias latipes, Japanese medaka; and Ictalurus nebulosus, brown bullhead catfish. Emphasis was placed on structural features that may influence interpretation of toxic and carcinogenic lesions.

Effects of acid-stress on epidermal mucous cells of the brown bullhead Ictalurus nebulosus (LeSeur): a morphometric study.

The effects of acid water on alcian blue-periodic acid Schiff's stainable mucosubstances of epidermis from the anterior abdominal wall of brown bullhead catfish, Ictalurus nebulosus, were studied. Standard morphometric techniques were used to determine mucous cell volume density (MCVv) and number density (MCNv) of control (pH 6.8-7.