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Fecal scores of piglets at 0- to 5-days post-inoculation (dpi). Blue circles, red squares, green triangles, and purple triangles represent PDCoV-inoculated, PEDV-inoculated, co-inoculated, and control groups. Different lower-case letters indicate significant differences between each group and each dpi (p < 0.05). Values of mean ± standard deviation (SD) of each group, and each dpi are presented in a table under the graph.
