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Articles sur Adaptive immune response

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An artist’s impression of antibodies (red and blue) responding to an infection with the new coronavirus SARS-CoV-2 (purple). KTSDESIGN/SCIENCE PHOTO LIBRARY / Getty Images

Declining antibodies and immunity to COVID-19 – why the worry?

If antibody levels drop dramatically after an infection, what does that mean for immunity? An expert explains how B and T cells contribute to immunity and why antibodies don’t tell the full story.
The only thing standing between invaders such as bacteria, viruses, parasites and fungi and our devastation is our immune system. kurtxio/Flickr

Explainer: how does the immune system learn?

The immune system does such a good job most of the time that we only really think about it when things go wrong. But to provide such excellent protection, it must constantly learn.
The innate immune response causes the common signs of inflammation including swelling, pain, heat, redness and loss of function. Brandon Daniel/Flickr

Explainer: how does the immune system work?

The immune system is critical for protecting against illness-causing organisms, such as viruses, bacteria and fungi, which are collectively known as pathogens. Without it, we would quickly become infected…

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