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Timeline of MuAstV infection study. C (purple), cage surfaces swabbed for MuAstV RT-PCR analysis; F (blue), feces collected for RT-PCR analysis; M (red), MuAstV inoculation; N (brown), mice weaned; PND, postnatal day of litter; S (yellow), sentinels added to soiled bedding; T (orange), tissues collected for histopathology and MuAstV RT-PCR analysis.
