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Pathologic features of hearts and kidneys (HE staining, ×200). (a) Normal control of heart tissue; (b) infected control of heart tissue; (c) TFE-treated group of heart tissue; (d) normal control of kidney tissue; (e) infected control of kidney tissue; (f) TFE-treated group of kidney tissue. Animals of each group were sacrificed on day 15 after viral exposure for pathological examination.
