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. 2010 Apr 21;145(3):245–251. doi: 10.1016/j.vetmic.2010.04.010

Fig. 1.

Fig. 1

Kinetic of the growth of the bubaline coronavirus isolates on Madin Darby bovine kidney cells. The number of passages is indicated on the x-axis, whereas the corresponding cycle threshold (CT) values are presented on the y-axis. Passage 0 is the inoculum used to infect the bovine cells and corresponding to the cryolysate of the 3rd passage on HRT-18 cells.