Cytomegalovirus CMV (infected cell)

Cytomegalovirus (CMV) is a widespread virus from the large herpesvirus family, known for its ability to remain discreetly in the body for life after infection. In most healthy individuals, it often goes unnoticed or causes mild symptoms resembling mononucleosis (fatigue, fever, sore throat, and swollen lymph nodes). However, in immunocompromised individuals or in a fetus during an infection in pregnancy, it can lead to more serious complications, including damage to organs, the nervous system, or hearing.

CMV is transmitted through contact with bodily fluids such as saliva, urine, blood, semen, or breast milk. It therefore circulates easily in daily life, especially with young children. Once in the body, it can enter a "dormant" phase and reactivate if the immune system weakens. There is no complete cure to permanently eliminate the virus, but antivirals can control the infection in high-risk or severe cases. Prevention relies on simple actions, such as regular hand washing, avoiding sharing personal items, and being particularly vigilant during pregnancy.

Under the microscope, CMV is famous for transforming the cells it infects: they become abnormally large (hence the name "cytomegalo") and exhibit a characteristic viral inclusion in the nucleus, often described as an "owl's eye"; a dark area surrounded by a clear halo. These giant cells are a key indicator for biologists and pathologists when trying to identify a CMV infection.

Discreet but fascinating, CMV deserves its place in any scientific collection. Add this cytomegalovirus-infected cell sticker to your collection and let this virus enlarge your curiosity!

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PUN : You might feel Cyto-mega-low if infected !