Penicillin

Rarity: Ultra rare

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Notion

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Science and technology

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What Wikipedia says

Penicillins (P, PCN or PEN) are a group of β-lactam antibiotics originally obtained from Penicillium moulds, principally P. chrysogenum and P. rubens. Eight species of Penicillium, in the section Chrysogena, produce penicillins.

Excerpt from the Wikipedia article “Penicillin”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Benjah-bmm27, Public domain, via Wikimedia Commons.