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Analysis of expression profile at exponential growth phase (A) and stationary growth phase (B), analyzed by RT-PCR with gene-specific primers for 10 genes reported to be expressed in infected macrophages. The gene amplified is indicated above each lane. M, 100-bp marker. The RNA concentration was 300 ng per 20 μl of reaction mixture in each case. mce1 was used as a positive control (A). The fast-moving band has the primer dimers.
