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49.9 MB (9.8 MB compressed)
4179 x 4172 pixels
35.3 x 35.3 cm ⏐ 13.9 x 13.9 in (300dpi)
NATIONAL INFECTION SERVICE / SCIENCE PHOTO LIBRARY NATIONAL INFECTION SERVICE / SCIENCE PHOTO LIBRARY
Respiratory syncytial virus (RSV) particles, coloured transmission electron micrograph (TEM). This pneumovirus, a type of paramyxovirus, is a major cause of human respiratory tract infections in patients of all ages. Each virion consists of RNA (ribonucleic acid) genetic material enclosed in a protein coat, or capsid (orange and brown), within a phospholipid envelope (brown and green). The envelope is covered in protein spikes (yellow), which enable the virus to attach to and enter a host cell. In adults, RSV only affects the upper respiratory tract, but in infants bronchiolitis (bronchiole inflammation) or bronchopneumonia can result. Magnification: x118,000 when printed 10 centimetres wide.
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