![](http://www.alamy.com/thumbs/6/328E4150-F823-455A-A124-E3387B5F5FCE/2DCAHGM.jpg)
Skeletal formula of Methotrexate. Drug chemical molecule.
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Photo credit: © Maksim Grebeshkov / Alamy / Afripics
License: Royalty Free
Model Released: No
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