Medically reviewed by Kashif J. Piracha, MD The A/G ratio measures the total amount of protein in your body by comparing the ...

Assays for hepatitis B surface antigen (HBsAg) are the most frequently used tests to detect HBV infection. Vaccination for HBV can produce transiently detectable levels of HBsAg in patients.

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Learn how to shoot HDR images manually, as well as with a built-in HDR mode, so you can capture an image that has a much improved dynamic range.