Effect of hormonal and neurotrophic factors on the expression of fast myosin in slow muscle

Myosin ATPase and succinic dehydrogenase activity and fast myosin (indirect immunochemical test) were assayed in m. soleus of guinea-pigs after the administration of T4 (200 micrograms/kg) to animals every day for 3 weeks. This was followed by the application of 10 mM colchicine solution to sciatic nerve for 6 min. Fast muscle fibers and the line of precipitation with antiserum to fast myosin were revealed in soleus muscle of experimental animals after the application of colchicine and T4 injection.     

Architectonic and Diagnostic Significance of Hair Cuticle

Guard hair and spine architectonic were studied in 345 mammalian species using scanning electron microscopy. Comparative morphological analysis of the author's and published data was performed to systematize the available information. Original terminology and classification of the main hair and spine cuticle patterns have been proposed. The hair and spine cuticle structure patterns, their adaptability, and value for taxon identification are discussed.