Diseases, Conditions, Syndromes

Why don't antibodies guarantee immunity?

With millions of COVID-19 cases reported across the globe, people are turning to antibody tests to find out whether they have been exposed to the coronavirus that causes the disease. But what are antibodies? Why are they ...

Diseases, Conditions, Syndromes

COVID immunity lasts at least eight months, new data reveals

Australian researchers have revealed—for the first time—that people who have been infected with the COVID-19 virus have immune memory to protect against reinfection for at least eight months.

Diseases, Conditions, Syndromes

Powerful new antibody neutralizes all known SARS-CoV-2 variants

As SARS-CoV-2 has evolved and mutated, therapeutic antibodies that worked early in the pandemic have become less effective, and newer variants, especially omicron, have developed ways to evade the antibodies we make in response ...

Genetics

The protein that stands between us and autoimmunity

The immune system is supposed to protect from external microbial invaders, but sometimes it turns its efforts inward, potentially resulting in autoimmune diseases. In a new study, researchers from Osaka University have discovered ...

Diseases, Conditions, Syndromes

Differences in COVID antibody responses emerge

Hope for a future without fear of COVID-19 comes down to circulating antibodies and memory B cells. Unlike circulating antibodies, which peak soon after vaccination or infection only to fade a few months later, memory B cells ...

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B cell

B cells are lymphocytes that play a large role in the humoral immune response (as opposed to the cell-mediated immune response, which is governed by T cells). The principal functions of B cells are to make antibodies against antigens, perform the role of Antigen Presenting Cells (APCs) and eventually develop into memory B cells after activation by antigen interaction. B cells are an essential component of the adaptive immune system.

The abbreviation "B", in B cell, comes from the bursa of Fabricius in birds, where they mature. In mammals, immature B cells are formed in the bone marrow.

This text uses material from Wikipedia, licensed under CC BY-SA