Linear prediction line and scatter plot of quantities of log<sub>10</sub> <i>invA</i> genes via qPCR and log<sub>10</sub> CFU on BGA-plain agar. OhtaNaomi NorbyBo LoneraganGuy H. VinascoJavier BakkerHenk C. den LawhonSara D. NormanKeri N. ScottHarvey M. 2019 <p>Only with samples quantified using both methods (n = 190). The R<sup>2</sup> was 0.43, the coefficient was 0.54 and the intercept was 0.61.</p>