ROSENFELD IMAGES LTD / SCIENCE PHOTO LIBRARY ROSENFELD IMAGES LTD / SCIENCE PHOTO LIBRARY
Amino acid research. Glass tubes containing powdered amino acids during biological research. Abbreviations corresponding to the amino acids being used in the research have been marked on the tubes. The amino acids being used are phenylamine (marked "Phe"), arginine ("Arg"), alanine ("Ala") and glycine ("Gly"). The tubes are attached to a machine for processing samples in a research laboratory. Amino acids are the building blocks of proteins and play an important role in chemical reactions within cells.
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