Examlex
Lymph from a particular tissue region drains into a secondary node, regional node, or master node. Secondary nodes, in turn, drain into a primary node or central node.
Common Cold
A viral respiratory infection causing symptoms like runny nose, sore throat, cough, and sneezing.
Influenza
A highly contagious viral infection of the respiratory passages causing fever, severe aching, and often occurring in epidemics.
Allergy
A hypersensitive immune response to a substance that is normally harmless, causing symptoms such as sneezing, itching, and swelling.
Connective Tissue
A type of biological tissue that supports, connects, or separates different types of tissues and organs in the body.
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