POWER AND SYRED / SCIENCE PHOTO LIBRARY POWER AND SYRED / SCIENCE PHOTO LIBRARY
Bee sting. Coloured scanning electron micrograph (SEM) of the sting of a bee, Apis mellifera. The tip of the sting is armed with backward sloping barbs which makes it difficult to remove once it is embedded in skin. It consists of moveable chitinous elements into which the ducts of two glands open, one gland producing a poison which is injected when the sting penetrates. Magnification: x358 at 6x7cm size.
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