Antigen
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YouTubeHussain Biology
Antigen
An antigen (Ag) is a molecule or molecular structure, such as may be present at the outside of a pathogen, that can be bound to by an antigen-specific antibody (Ab) or B cell antigen receptor (BCR). The presence of antigens in the body normally triggers an immune response. The term "antigen" originally described a structural molecule that binds ...
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1M views · 105K reactions | President Trump thanked Americans for their “tremendous support” and said he is “doing very well” in a pre-recorded video he tweeted out Friday as he was being flown by Marine One to Walter Reed Military Medical Center where he will be treated for mild symptoms after testing positive for the COVID-19. https://fxn.ws/3naGmkF | Fox News | Facebook
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1M views · 105K reactions | President Trump thanked Americans for their “tremendous support” and said he is “doing very well” in a pre-recorded video he tweeted out Friday as he was being flown by Marine One to Walter Reed Military Medical Center where he will be treated for mild symptoms after testing positive for the COVID-19. https://fxn.ws/3naGmkF | Fox News | Facebook
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