On the determination of skeletal muscle types in Swiss albino mouse

Biochemical characteristics of the red, white and intermediate types of muscles have been studied with regard to the alterations in their glycogen, acid and basic proteins, nucleic acids (DNA and RNA) and SDH-activity, during the period of post-natal growth. The results of the investigation, which has been conducted on M, soleus, M. tibialis anterior and M. sartorius of Swiss albino mouse, indicate the predetermination of the biochemical characteristics of each muscle type with respect to the parameters studied and do not show post-embryonic differentiation.