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Hepatitis B Virus: Structure, Replication, Pathogenesis, Variants, Epidemiology, Prevention and Diagnosis

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  Introduction Hepatitis means inflammation of the liver. Viral hepatitis is one of the most important infectious diseases affecting humans worldwide. Several different viruses can cause hepatitis, but the major human hepatitis viruses are Hepatitis A virus (HAV), Hepatitis B virus (HBV), Hepatitis C virus (HCV), Hepatitis D virus (HDV), Hepatitis E virus (HEV), and Hepatitis G virus (HGV) . These viruses differ in their genetic material, structure, routes of transmission, incubation period, clinical manifestations, and ability to cause chronic infection. The liver performs many essential functions, including metabolism of nutrients, detoxification of harmful substances, synthesis of proteins, and production of bile. When hepatitis viruses infect liver cells, they can cause inflammation and damage to the liver. Some infections are short-lasting and resolve completely, whereas others may become chronic and lead to cirrhosis, liver failure, or hepatocellular carcinoma . ...
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Scope and Prospects of Microbial Biotechnology

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Scope and Prospects of Microbial Biotechnology Introduction Microbial biotechnology is the branch of biotechnology that uses microorganisms such as bacteria, fungi, yeast, algae, and viruses to develop useful products and processes. It combines microbiology, molecular biology, genetics, and biochemistry to improve human health, agriculture, industry, and the environment. Due to rapid technological advancement, microbial biotechnology has become one of the most important fields of modern science. Scope of Microbial Biotechnology 1. Medical and Pharmaceutical Applications Microorganisms are widely used to produce medicines and healthcare products. Many life-saving drugs are obtained from microbes. Examples: Production of antibiotics (Penicillin, Streptomycin) Vaccine development Insulin production using genetically modified bacteria Production of vitamins (Vitamin B12) Development of probiotics for gut health Importance: Reduces...
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