Contact: Matt Shipman
North Carolina State University
Caption: When faced with pathogenic fungi, bees line their hives with more propolis -- the waxy, yellow substance seen here. Propolis is a combination of plant resins and wax that has antifungal and antibacterial properties.
Credit: Michael Simone-Finstrom, North Carolina State University
Usage Restrictions: Photo credit must be given
Related news release: Bees 'self-medicate' when infected with some pathogens