30.7 MB (9.2 MB compressed)
2937 x 3652 pixels
24.9 x 31.0 cm ⏐ 9.8 x 12.2 in (300dpi)
SUSUMU NISHINAGA / SCIENCE PHOTO LIBRARY SUSUMU NISHINAGA / SCIENCE PHOTO LIBRARY
Honey bee excretory system. Coloured scanning electron micrograph of part of the excretory system of a honey bee (Apis mellifera). The convoluted Malpighian tubules (light brown) are responsible for the excretion of nitrogenous waste. They selectively extract water, salts and nitrogen-containing uric acid from the bee's blood. The tubules empty into the gut (intestine, pink) of the bee, and the waste is expelled from its body in the faeces. Magnification: x29 at 6x7cm size.
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