Adenosine crystals, polarised light micrograph. Adenosine is a nucleoside molecule composed of the base adenine bonded to the sugar ribose. It is invo


Adenosine crystals, polarised light micrograph. Adenosine is a nucleoside molecule composed of the base adenine bonded to the sugar ribose. It is involved in energy transfer and signal transduction (chemical messages being passed from one cell to another) within the body. It is also an inhibitory neurotransmitter (nerve signalling chemical) that promotes sleep by suppressing arousal.


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