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Health-associated strains carried and expressed deoR, a repressor gene in the porphyrin biosynthesis operon. deoR amplification from the cDNA and genomic DNA (gDNA) samples of multiple strains is shown in the gel image. 16S rRNA gene was used as a positive control. Strain HL045PA1, which is an acne-associated type IA-2 strain and does not carry deoR, is shown as a negative control.
