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. 2017 Mar 2;8:331. doi: 10.3389/fmicb.2017.00331

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Copyright © 2017 Papić, Pate, Henigman, Zajc, Gruntar, Biasizzo, Ocepek and Kušar.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Linear regression analysis of the log CFU/g numbers observed by the plate count method, qPCR and dPCR for quantification of Campylobacter jejuni in 75 naturally contaminated broiler neck-skin samples (15 pooled and 60 individual). (A) Correlation between qPCR and plate count method: linear trend line equation (thick continuous line). Correlation between variables was moderate and statistically significant (r = 0.513; p = 0.0006, N = 41). (B) Correlation between dPCR and plate count method was moderate and statistically significant (r = 0.458; p = 0.0003, N = 59). (C) Correlation between dPCR and qPCR was strong and statistically significant (r = 0.805, p < 0.0001, N = 48). Thin continuous lines in all three graphs represent line of equality (y = x). r, Pearson correlation coefficient.