Source: GENETIC LITERACY PROJECT, 1/3/22

Propolis is a sticky material that bees make from a mixture of wax and resins gathered from a wide variety of plants. They use it to coat the inner walls of their hives, to plug holes in the hive wall that might otherwise admit predators, and to encase the bodies of those intruders which do manage to breach that wall and have subsequently been stung to death. Evidence is mounting, however, that propolis serves as more than just a building and embalming material.

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