It has been shown that nu cleic ac ids re veal mem brane-sta bi liz ing and anti-in flam ma tory ac tions de pend ing on the or i gin and the pu rity level in in vi tro and in vivo ex per i ments. The pu ri fied yeast RNA has been found to be the most ef fec tive.

Two core trimers, (2',5')A AM and (2',5')A2ALA, with 9-(2,3-anhydro-ll-D-ribofuranosyl)-use as immunosuppressors in kidney transplantation in animals was investigated.adenine ( A m ) and its lyxo-isomer (A %A ) at the 2'(3')-terminus, respectively, were synthesized and their

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