has subject area Amino Acid Oxidoreductases Animals Cell Death Cells, Cultured Cerebral Cortex Excitatory Amino Acid Antagonists Fetus Glutamates Glutamic Acid Immunosuppressive Agents N-Methylaspartate Neurons Neurotoxins Nitric Oxide Synthase Phosphorylation Polyenes Rats Rats, Sprague-Dawley Sirolimus Tacrolimus