PR. J. BERNARD / CNRI / SCIENCE PHOTO LIBRARY PR. J. BERNARD / CNRI / SCIENCE PHOTO LIBRARY
Infectious mononucleosis. Light micrograph of blood cells obtained in a case of infectious mononucleosis (glandular fever). Caused by Epstein-Barr virus (EBV), infectious mononucleosis (mono) is transmitted through saliva. It is often referred to as the 'kissing disease'. It is characterised by enlarged, atypical lymphocytes, a type of white blood cell. This is a hyperbasophilic lymphocyte cell (red). The other cells here are red blood cells (orange).
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