DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY DENNIS KUNKEL MICROSCOPY / SCIENCE PHOTO LIBRARY
Light micrograph (LM) of Gamma-aminobutyric acid (GABA) and maleic acid crystals. GABA is an inhibitory central nervous system neurotransmitter secreted in the spinal cord, the cerebral cortex and the cerebellum. Maleic acid is an unsaturated dibasic acid. Magnification: x40 when shortest axis printed at 25 millimetres.
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