Common cold. Young girl coughing due to a cold. Inflammation of the upper respiratory tract due to infection with common cold viruses leads to coughin

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Common cold. Young girl coughing due to a cold. Inflammation of the upper respiratory tract due to infection with common cold viruses leads to coughing. The coughing reflex clears the airways of excess mucus secretion and phlegm. The common cold can be caused by almost 200 different viruses. It is most common in children as at school they are exposed to many viruses that they are not yet immune to.`

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Size: 2504px × 3315px
Photo credit: © OSCAR BURRIEL/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: animal, aquatic, biological, biology, brightfield, bryozoa, bryozoan, colonial, colony, fauna, feeder, filter, freshwater, illumination, invertebrate, life, light, lophophore, microbiological, microbiology, micrograph, microscope, moss, nature, plumatella, pond, repens, wildlife, zooid, zooids, zoological, zoology