is 19.03 KB, has a resolution of 768x768 pixels and was uploaded on September 8, 2022 @ 6:14 am by user: ericsder. It is filed under the tags: black and white, monochrome, molecule, line art, chemistry. Click the blue button at the top to freely download: Branched-chain Amino Acid Leucine Chemical Structure Substance PNG amino acid structure substance, Zwitterion clipart png.