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Transcription analysis of CA9/CA12 genes in normal tissues. Two identical membranes (No. 7775-1, Multiple tissue expression array; Clontech) contained human poly-A+ RNA samples extracted from 68 different normal tissues, eight cancer cell lines, and control samples of DNA and RNA. CA12 mRNA is expressed predominantly in the kidney (A7) and colon (H5), whereas CA9 is expressed mainly in the stomach (B5), liver (A9), pancreas (B9), salivary gland (E9), and heart (A4).
