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Human B lymphocytes mature in an intestinal region called the bursa.
Influenza
A highly contagious viral infection that affects the respiratory system, characterized by symptoms like fever, cough, and body aches.
Allergy
An immune system reaction to a foreign substance (allergen) that is not typically harmful to the body, which can cause various symptoms like sneezing, itching, and swelling.
Muscle Aches
discomfort, soreness, or pain in the muscles, often resulting from overexertion, injury, or a health condition.
Common Cold
A viral infectious disease characterized by symptoms like runny nose, coughing, sore throat, and sneezing; highly contagious but usually mild.
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