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Extent of segmental amplifications in four strains derived from the ΔargC proA* strain. proB and proA* are highlighted in red. Blue arrowheads indicate sites and direction of primers used for identification of the size of amplified segments. The orange arrowhead indicates the site of the primer used to sequence PCR amplicons to identify amplification boundaries. The extent of A4 is indicated in dashed lines because the exact boundaries could not be determined.
