Any substance that induces the immune system to produce antibodies against it is called an antigen. Any foreign invaders, such as pathogens (bacteria and viruses), chemicals, toxins, and pollens, can ...

After infusion, CAR T cells leave the blood and travel to sites of tumor, where they identify and kill tumor cells. This can trigger extensive proliferation of CAR T cells and the release of tumor ...

A hypersensitivity reaction happens when the immune system mistakenly identifies harmless substances as harmful. There are several types of hypersensitivity reactions, depending on the class of ...

Hepatitis B is a viral infection that impacts the liver. To test for hepatitis B, a doctor can perform a blood test that detects hepatitis B surface antigens. A positive result indicates a hepatitis B ...

Researchers have demonstrated the use of an everyday kitchen appliance as a simple, affordable and accessible alternative for performing heat-mediated antigen retrieval. Researchers from the ...

The Food and Drug Administration said Tuesday that preliminary research shows some rapid antigen tests may be less sensitive at detecting the highly contagious omicron variant of the coronavirus. The ...

Scientists in Thailand have uncovered more mysteries in the world of blood, beyond the commonly available blood groups, A, B, O, AB, with the Rh factor that determines positive and negative. They have ...

Researchers have developed a single-dose powdered vaccine that is inhaled directly into the lungs to produce an effective immune response. The vaccine can deliver multiple antigens, meaning one dose ...