FIG. 5.

(a) Classification map of the experimentally processed samples. The bacteria on the abscissa indicate that they were found at least once in the 21 samples. (b) Actual or sample key of bacteria present in all 21 samples. The dark gray coloring for sample 20 represents Bacillus atrophaeus, which was identified as B. subtilis in panel a. Sample 21 was a blank. In the table, the numbers in parentheses for each organism signify the number of proteins identified with a P ≥ 0.95 probability match. Solid box, strain-level identification; vertically hatched box, species-level identification; horizontally hatched box, genus-level identification.