ANTONIO ROMERO / SCIENCE PHOTO LIBRARY ANTONIO ROMERO / SCIENCE PHOTO LIBRARY
Glutamine crystals. Polarized light micrograph of crystals of the amino acid glutamine. This non-essential (synthesised by the body) amino acid is used in protein synthesis and to support the production of the antioxidant glutathione. Although the body can produce it, immune system weaknesses and nerve problems can occur during times of high demand. Field of view size: 1.49 x 2.23 millimetres.
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