has subject area Animals Arginine Cell Survival Cells, Cultured Citrulline Cyclic GMP Dizocilpine Maleate Fetus Glutamates Hemoglobins Hippocampus Kinetics N-Methylaspartate Neurons Neurotoxins Nitric Oxide Rats Receptors, N-Methyl-D-Aspartate Superoxide Dismutase