The timus and spleen as the indicators of power supply sources of animals

The alterations taking place in tissues and organs of animals under different types of stress have been investigated. The greatest changes happen to be in the spleen and timus. The quickest response (in 25 minutes) has been registered in the muscles timus when swimming in cold water The response in the spleen has been observed by the end of the first day. The reduction of cells in the timus and spleen happens under the stress which is connected with the reaction directed to the maintenance of power supply sources of an organism