this mrna was also present in an adult slow twitch ( type i ) skeletal muscle ( soleus , 63 % of the concentration in heart ) , testes ( 28 % ) , a fast twitch skeletal muscle ( psoas , 17 % ) , brain ( 10 % ) , kidney ( 5 % ) , and adrenal gland ( 5 % ) .
C0086045
concentration
C0006104
brain