[Sensitivity to tonic pain and analgin in two lines of mice with knockout genotype].

A comparative study of behavioral reactions (licking of back paw, sleeping, eating, running, washing) in mice with a genetic knockout (lines C57BL/6L and CBA/CaLac) and in control animals was carried out. Experiments have been performed in control conditions (without any influences), after a subcutaneous injection of 5% formalin solution, and also in a case when animals before an injection of formalin received analgin. It was established that the behavior of mice with a genetic knockout without any influences statistically authentically differs from mice without genotype infringements.