A city council leader has issued a "use it or lose it" message after confirming under-threat libraries will no longer close. This week, campaigners fighting to keep Woodston Library in Peterborough ...

Proteolytic enzymes play widespread roles in a variety of essential biological processes, both as nonspecific mediators of protein degradation and in the catalysis of specific cleavage events.

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Welcome to Smithsonian Open Access, where you can download, share, and reuse millions of the Smithsonian’s images—right now, without asking. With new platforms and tools, you have easier access to ...