Caffeine
(Science: chemical) a xanthine derivative that elevates camp levels in cells by inhibiting phosphodiesterases.
A bitter alkaloid found in coffee and tea that is responsible for their stimulating effects.Caffeine is a diuretic that stimulates the central nervous system, and can be found in cocoa beans.
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This tutorial presents the benefits and the possible adverse eventualities of genetic engineering. Know more about this ..
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This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..
