amino acids soup

Why are there 20 amino acids?

By Rachel Brazil

Rachel Brazil tries to untangle the alphabet soup of life

Close-up of the nanospray apparatus used in electrospray ionisation mass spectrometry (ESI-MS)

Medical mass spec

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Mass spectrometry can be used for more than just small molecules, meaning it is a vital tool in drug discovery and hospitals, as Clare Sansom discovers

Chemical compounds

Reaching a milestone

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The decade-long process to register all chemicals used in Europe has concluded. Nina Notman takes stock of progress and looks to the next steps for chemical legislation in the region

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