No of specimen Containing of propionic bacteria in human skin specimens, cells per 100 μl P. acnes P. granulosum P. avidum 1 1320 0 594 2 212270 33470 0 3 495 957 5874 4 57970 0 0 5 124773 18010 5544 6 7128 0 4983 7 117615 2030 0

Table 1: Detection of different species of propionic bacteria in human skin swabs by real time PCR method.