measurements of ca2+-atpase activity of myosins from young and old control animals and from animals with changed thyroid state showed that hypothyroidism in rats is associated with a greater decrease of myosin atpase in young rats which contain v1 isomyosin only , when compared with old rats which contain a preponderance of v3 isomyosin and less of the v1 form .
C0040132
thyroid
C0020676
hypothyroidism