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. 2016 Jun 29;12:133. doi: 10.1186/s12917-016-0754-0

Fig. 4.

Fig. 4

a Figure of challenged unvaccinated sheep showing local inflammations on site of inouclation (flank) with 10–1 to 10–6 dilutions (left to right) of virulent SPPV in five replica. b Challenged vaccinated sheep showing no local inflammations on the injection sites