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. 2020 Feb 14;5:15. doi: 10.1038/s41541-020-0164-y

Fig. 1. Experimental design for vaccination and challenge.

Fig. 1

Five- to eight-week-old female C57BL/6 mice were vaccinated with subcutaneous injection and challenged six weeks later with virulent strain of M. paratuberculosis JTC-1285 by the intraperitoneal route. Mice (n = 5/group) were sacrificed at various time points. Tissues and blood samples were collected to measure bacterial burden, cytokine levels and histopathology.