[Analysis of the changes in the mass of the internal organs in a toxicological experiment]

The authors describe a method for the evaluation of the changes in the mass of the animals' internal organs in a toxicological experiment. The method is based on the use of a regression analysis. The method permits evaluating the action of a factor on the mass of the organs, with the exception of the effect of a change in the body mass in an experiment and initial weigh heterogeneity in animal groups.