The itching, redness and swelling of an allergic reaction are caused by mast cells—the vigilant first responders of the immune system that spring into action with histamine-filled granules in response ...
(NEXSTAR) — As flu and RSV move across the U.S. and elsewhere – in addition to COVID-19 – there are increasing concerns about strep throat, and the bacteria that causes it, streptococcus. Like RSV, or ...
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