Progressive clearance of verrucae vulgaris following daily topical application of vitamin A. Appearance of warts prior to vitamin A treatment (Panel A) and at 70 days (Panel B), 16 weeks (Panel C) and 6 months (Panel D). Large arrow indicates large wart on knuckle requiring the longest time to resolve. Small arrows indicate smaller warts cleared by 16 weeks.
Gaston and Garry Virology Journal 2012 9:21 doi:10.1186/1743-422X-9-21