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. 2017 Sep 26;5:128. doi: 10.1186/s40168-017-0347-6

Fig. 5.

Fig. 5

Sum of VOCs, as measured with the PTR-TOF-MS, and microbial gene copies (sum of bacteria and fungi), as estimated with qPCR. “S1” corresponds to sampling period 1 and “S2” to sampling period 2