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In an effort to examine the molecular basis of spermatogenesis, we isolated two types of novel cDNA clones specifically expressed in mouse testes. Type A cDNA (2,071 nucleotides) is predicted to encode 347 amino acid residues, whereas type B cDNA (1,536 nucleotides) has a deletion of 535 bp from nucleotides 1,206 to 1,740 of type A cDNA, probably due to alternative splicing. This deletion causes a...
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