Scientists at Sanford Burnham Prebys, University of California San Diego and their international collaborators have reported that more types of lung cells can be infected by SARS-CoV-2 than previously thought, including those ...
Jul 23, 2024
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Researchers in George Mason University's Center for Infectious Disease Research (CIDR) and Tulane National Primate Research Center have conducted a breakthrough proof-of-concept study, published in the journal Gene Therapy, ...
Jul 24, 2024
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Scientists have discovered that electrical currents may make natural killer (NK) cells—our very own cancer-killing immune cells—even better killers, which could have significant implications for treating some cancers.
Jul 25, 2024
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Researchers at the Leibniz Institute for Immunotherapy (LIT) describe a new type of regulation of immune cells by so-called "jumping genes."
Jul 23, 2024
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Findings from a small, proof-of-concept clinical trial have suggested that fecal microbiota transplants (FMTs) can boost the effectiveness of immunotherapy in a range of gastrointestinal cancers.
Jul 25, 2024
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University of Toronto researchers have identified two genes that play a critical role in tumor growth in the pancreas—findings that have significant implications for understanding and treating pancreatic cancer.
Jul 25, 2024
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Scientists at the University of Colorado Anschutz Medical Campus have discovered a new evasion strategy used by the varicella zoster virus, which causes chickenpox and shingles, that may allow it to affect tissues far from ...
Jul 25, 2024
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Small, laboratory-grown balls of cells made from the intestinal tissue of people with celiac disease have revealed a previously unknown molecular link between gluten exposure and intestinal damage, according to a study by ...
Jul 25, 2024
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Cornell researchers have identified a switch that regulates inflammation caused by an immune response, a finding that could one day help clinicians control inflammation-related conditions such as autoimmune, cardiovascular ...
Jul 24, 2024
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An ischemic stroke is a type of stroke that occurs when a blood clot in an artery, also known as thrombus, or the progressive narrowing of arteries, blocks the blood and oxygen flowing to the brain. This process can cause ...
Immunity is a biological term that describes a state of having sufficient biological defenses to avoid infection, disease, or other unwanted biological invasion. Immunity involves both specific and non-specific components. The non-specific components act either as barriers or as eliminators of wide range of pathogens irrespective of antigenic specificity. Other components of the immune system adapt themselves to each new disease encountered and are able to generate pathogen-specific immunity.
Adaptive immunity is often sub-divided into two major types depending on how the immunity was introduced. Naturally acquired immunity occurs through contact with a disease causing agent, when the contact was not deliberate, whereas artificially acquired immunity develops only through deliberate actions such as vaccination. Both naturally and artificially acquired immunity can be further subdivided depending on whether immunity is induced in the host or passively transferred from a immune host. Passive immunity is acquired through transfer of antibodies or activated T-cells from an immune host, and is short lived, usually lasts only a few months, whereas active immunity is induced in the host itself by antigen, and lasts much longer, sometimes life-long. The diagram below summarizes these divisions of immunity.
This text uses material from Wikipedia, licensed under CC BY-SA
