[Functional changes in the mucosa of the small intestine of sturgeons in toxic exposures].

Exposure to toxic effect of sulfate lignin induced swelling of mucous folds and separate epithelial cells in the sturgeon gastrointestinal tract's mucous membrane. Cholinesterase was found in epithelial layers under the toxic effect. Participation of the meta-sympathetic nervous system in organisation of the intestinal tissue responses to unfavourable effects is discussed.