STUDY ON THE MECHANISM OF INTERFERON ACTION (Ⅺ)——EFFECT OF pppA2’p5’A2’p5’A ON THE LEVEL OF cAMP AND

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In this paper, the increase of cellular cAMP and cGMP levels in macrophages induced bypppA2’p5’A2’p5’A (briefly 2’-5’P<sub>3</sub>A<sub>3</sub>) is first reported. The optimal concentration of 2’-5’P<sub>3</sub>A<sub
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