Figure 3.

¹³C-nuclear magnetic resonance (¹³C-NMR) spectra of brain extracts of: (A) sham-operated animal; (B) the contralateral hemisphere of an HI animal; (C) the ipsilateral hemisphere of an HI animal. The horizontal axis has been truncated at several places. The peaks of lactate, alanine, glutamate, glutamine, GABA, aspartate, NAA, creatine, and taurine are marked. All ‘singlets' are marked in (C) while the ‘doublets' are marked in (B) or (A). The isotopomers for NAA, creatine, and taurine were not labeled above natural abundance. HI, hypoxic-ischemia; NAA, N-acetyl aspartate; p.p.m., parts per million.