作者: P A Maher
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摘要: Protein tyrosine kinase activity was assayed in a variety of chicken tissues during embryonic development and the adult. In some protein decreased development; however, other it remained high throughout development, contrast to level phosphorylation, which development. The highest levels were detected 17-d brain although only low phosphorylation observed this tissue. Several alternatives examined an effort determine mechanism responsible for phosphorylated proteins most older adult despite presence highly active kinases. results show that regulation is complex varies from tissue Furthermore, suggest phosphatases play important role regulating phosphotyrosine many tissues.