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Virus titration from APMV-7-infected chickens at 2 day postinfection. Virus titers from the indicated tissues harvested on day 2 from 1-day-old and from 2-week-old chickens infected with the viruses are shown. Chickens were inoculated by the oculonasal route. Each group is represented by 3 birds for each day. Titers are shown as mean TCID50 per gram for tissues or TCID50 per milliliter for swabs.
