Years before tau tangles show up in brain scans of patients with Alzheimer's disease, a biomarker test can detect small amounts of the clumping-prone tau protein and its misfolded pathological forms ...

Hepatitis B (sometimes referred to as hep B) is a liver infection caused by the hepatitis B virus (HBV). It typically causes symptoms like stomach pain, dark urine, fatigue, fever, jaundice (yellowing ...

(Photo Credit: E+/Getty Images) Three types of flu viruses affect humans: types A, B, and C. Type A and B cause the annual influenza epidemics that have up to 20% of the population sniffling ...

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