CENTRE FOR INFECTIONS / PUBLIC HEALTH ENGLAND / SCIENCE PHOTO LIBRARY CENTRE FOR INFECTIONS / PUBLIC HEALTH ENGLAND / SCIENCE PHOTO LIBRARY
Human metapneumovirus particles. Coloured transmission electron micrograph (TEM) of particles of the human metapneumovirus (hMPV), a respiratory virus that affects almost all children by the age of 5. The virus is a type of paramyxovirus, consisting of RNA (ribonucleic acid) genetic material enclosed in a protein coat, or capsid, within a phospholipid envelope. The envelope (white) is covered in protein spikes, which are seen here as the virus' outermost layer (orange and green). Magnification: x170,000 when printed 10 centimetres wide.
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