Coloured scanning electron micrograph (SEM) of bacteria (purple) on pollen grains (yellow) which have been extracted from the hindgut of a bee. These are commensal bacteria, which occupy niches in bee guts that could otherwise be colonised by pathogenic bacteria. The scale shown in the bottom right is given in micrometres. 10 micrometres is equal to millimetres.

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Photo credit: © ARS, US DEPARTMENT OF AGRICULTURE/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
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Keywords: -, background, bacteria, bacteriological, bacteriology, biological, biology, black, botanical, botany, commensals, electron, flora, grains, gut, microbiota, microflora, micrograph, nature, pollen, reproduction, reproductive, scale, scanning, sem, text