ANATOMY
GENITO URINARY AND ADRENAL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The specificity of antigen binding by specific antibodies
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The presence of identical DNA sequences in different organisms
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The presence of identical antigens in all organisms
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The ability to separate proteins by electrophoresis
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Detailed explanation-1: -A laboratory test that checks for the presence of antibodies or other substances in a blood sample. Antibodies are proteins made by the body’s immune system in response to a foreign substance or microorganism, such as a virus.
Detailed explanation-2: -What are antibody serology tests? Antibody serology tests check for the presence or level of specific antibodies in the blood. Antibodies are proteins that your immune system makes to fight foreign substances. These substances are often pathogens, (disease-causing germs) such as viruses and bacteria.
Detailed explanation-3: -COVID-19 serology tests look for antibodies that bind to specific SARS-CoV-2 proteins (antigen) on the virus, which are present if a person has been infected and recovered. These tests can be used to determine the prevalence of disease in a population, even after the infection has passed.
Detailed explanation-4: -Serological testing always involves reactions between specific antibody and antigen. ELISA tests use a fluorescent dye as a label to trace antigen-antibody reactions. Serological tests should have low sensitivity and specificity. The tuberculin test is an example of an in vivo serological test.