Medically Reviewed by Dr. Neha Pathak, MD When you are sick it is important to learn what the symptoms may indicate. Symptoms Come on Fast When you have a cold, symptoms like a stuffy nose or sneezing start slowly and gradually get worse. Flu symptoms typically hit your body all...
The immune system protects the body with stratified defenses and high specificity. There are two major components of the immune system: the innate and the adaptive. In simple terms, physical barriers prevent the entry into the body of pathogens, such as bacteria and viruses. If a pathogen breaks through these...
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