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Presence of XAP2 in COS-1 cells. (A) Northern blot analysis of XAP2 mRNA. Poly(A)+ mRNA (4 μg) from COS-1 cells was probed with simian XAP2 cDNA. (B) Immunoblot analysis of XAP2. Lanes: 1, XAP2 translated in vitro; 2, 100 μg of COS-1 cytosol.
