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RT-PCR analyses of the human lung (A), H441 Clara cells (B), and rat lung (C) reveal gene expression of guanylin (lanes 2), GC-C (lanes 3), cGKII (lanes 4), CFTR (lanes 5), AE2 (lanes 6), EBP50/NHERF (lanes 7 in A and B), and E3KARP/NHERF-2 (lanes 8 in A and B) with amplification products of correct molecular size. A 100-bp DNA ladder is indicated (A and B, lanes 1 and 9; C, lanes 1 and 7).
