KATERYNA KON / SCIENCE PHOTO LIBRARY KATERYNA KON / SCIENCE PHOTO LIBRARY
Hepatitis B virus in blood, computer illustration. Hepatitis B is a DNA virus from the Hepadnaviridae family. It is transmitted by blood, sexual intercourse, and across the placenta. It causes hepatitis B, a disease characterised by inflammation of the liver, which can lead to liver cirrhosis, cancer and death.
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