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Genetic organization of the icmTSRQPO locus (EMBL accession no. Y12705). (A) Size and predicted transcriptional units of the icmTSRQPO locus are indicated by the arrows, while the numbers above the arrows indicate the nucleotide range of the sequence. (B) The genetic regions contained in several subclones and the primers used for their PCR amplification are shown. Inverted filled triangles indicate Kan insertions, and the small arrows indicate the primers used for PCR.
