![](http://www.alamy.com/thumbs/6/8A3B3EC4-5280-4892-A813-A876A2A84435/JEMXFH.jpg)
Blackboard with the chemical formula of Glutamic acid
Size: 5472px × 3648px
Location: spain
Photo credit: © felipe caparros cruz / Alamy / Afripics
License: Royalty Free
Model Released: No
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