Intracytoplasmic vacuoles in basal keratinocytes (with negative oil red O-staining)
intracytoplasmic vacuoles in basal keratinocytes (with negative oil red o-staining)
Intracytoplasmic vacuoles in basal keratinocytes (with negative oil red O-staining)
intracytoplasmic vacuoles in basal keratinocytes (with negative oil red o-staining)