Examlex
The vertebrate spinal cord develops from the embryonic ________.
Common Cold
A viral infection of the upper respiratory tract, which affects the nose, throat, and sinuses, leading to symptoms like sneezing, coughing, and a runny nose.
Influenza
A highly contagious viral infection of the respiratory passages causing fever, severe aching, and catarrh, often occurring in epidemics.
Allergy
A hypersensitive immune response to a substance that is normally harmless to most people, such as pollen, food, or dust mites.
Sudden Onset
Refers to the rapid development of symptoms or conditions, often without warning.
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