Multiplex PCR assays were developed to identify Actinobacillus pleuropneumoniae serotypes 1, 2, and 8. Primers designed for the conserved capsular polysaccharide (CP) export region amplified a 489-bp DNA fragment from all serotypes. Primers specific to the CP biosynthesis regions of serotypes 1, 2, and 8 amplified fragments of 1.6 kb, 1.7 kb, and 970 bp from only their respective serotypes.
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Schuchert et al. (2004) studied this question.
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