Approximately 300 million people worldwide are chronically infected with the hepatitis B virus (HBV) and at high risk of developing liver cirrhosis or hepatocellular carcinoma. Consequently, there is ...
A polymerase chain reaction (PCR) test detects genetic material from a pathogen or abnormal cell sample. Ways of collecting samples include a nasal swab, a saliva swab, or taking a sample of blood.
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