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Chemical and Biological Technologies in Agriculture
Fig. 2 | Chemical and Biological Technologies in Agriculture

Fig. 2

From: Application of MALDI-TOF mass spectrometry and specific PCR for tracking of E. coli O157:H− strain 431/97 in Batavia lettuce

Fig. 2

Viable counts of rhizosphere samples on SMAC agar at different incubation periods after inoculation with E. coli O157:H− 431/97 (means and standard deviations of two biological and two technical replicates). Hatched bars: autochthonous microbiota; black bars: E. coli O157:H− 431/97; black line: quantification limit. N negative control, L low inoculation level, H high inoculation level

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