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hypersensitivity to a substance that is usually harmless
molecule that forms when carbon dioxide attaches itself to the amino group of a haemoglobin...
a plant body consisting of one or more cells. It is not differentiated into root, stem and...
the main supporting cells of neurons in the peripheral nervous system (PNS).
energy resources such as coal and oil, which are being used up much more quickly than they can...
to change over a period of time in response to new environmental conditions.