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. 1998 Apr 6;141(1):199–208. doi: 10.1083/jcb.141.1.199

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Northern blots of ZO-3 and ZO-2. 5 μg of MDCK cell poly(A)⁺ RNA probed for ZO-3 shows a ∼3.4-kb transcript. Blot stripped and reprobed for ZO-2 shows the expected 5.2-kb transcript (21). RNA standards at right (kb).