The skin sample should be obtained from an unaffected area adjacent to a lesion.

Their flight caused anger in the provinces, where locals accused them of bringing the coronavirus epidemic to previously unaffected areas.

Pentagon employees returned the next day to offices in mostly unaffected areas of the building.

Students in unaffected areas were not evacuated and remained in the country.

Since the blood vessels are involved in a patchy pattern, there may be unaffected areas on the vessel and the biopsy might have been taken from these parts.