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PCR fragment distributions in C. botulinum type A1 strain genomes. This is part of exploded view of figure 3. PCR product from Hall strain primers Puo and P2do combination was divided into two fragments: F1 (bright red) and F2 (bright green). F1 and F2 fragments were split in ATCC 3502 and ATCC 19397 genomes but remained within comparable blocks.
