Fig. 1From: Is MMTV associated with human breast cancer? Maybe, but probably notSchematic of the location of the amplicons and probes within the MMTV DNA sequence (GenBank accession number: K01788). Base numbers are as indicated. The vertical wavy lines indicate interruptions in the sequence for display convenience. The locations within the env and sag genes are shown. The clinical amplification utilized dUTP as a substrate and the sequencing amplification utilized dTTP as a substrate. The clinical primers would not amplify the sequencing amplicon and vice versaBack to article page