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 ...
The World Health Organization (WHO) said on December 24, 2025, that it has prequalified two rapid antigen diagnostic tests (Ag-RDTs) for SARS-CoV-2, the virus that causes COVID-19. According to WHO, ...
Antigen tests, when they work properly, do the same thing -- they recognize the structures that characterize different viruses or bacteria. But designing the tests can be challenging, according to ...
In a recent study posted to the medRxiv preprint* server, researchers pursued evidence of whether severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antigens, of which spike (S) protein is ...
ROS are key players in the immune system's response to infection and cancer, influencing how the body identifies and fights these threats. A balanced level of ROS supports healthy immune function, but ...
A new discovery about how cells communicate with each other in the body's immune system has revealed deeper insights for an ...
It is well known that the biggest genetic risk factor for the autoimmune disease systemic lupus erythematosus (SLE) is major histocompatibility complex class II (MHC-II). What remains unclear is the ...
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