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We searched for possible mutations in the E2F-binding region of retinoblastoma gene in primary human renal cell carcinomas, using polymerase chain reaction and single-strand conformational polymorphism analysis of RNA. Retinoblastoma gene mutation was detected in 1 of 21 cases (5%). DNA sequencing of the polymerase chain reaction product verified that this case had a 6-base deletion at the beginning...
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