Question: What is gauge invariance? > Aristo is not sure about this one... Maybe next year. On the other hand... >Question: What is an excitatory neurotrans

Question: What is gauge invariance? > Aristo is not sure about this one... Maybe next year. On the other hand... >Question: What is an excitatory neurotransmitter? > Aristo is not sure about this one... > Aristo's best guess: glutamate (acts on Ca++ channels) aspartate (acts on Ca++ channels) adenosine, ATP, ADP, AMP > Confidence: 24.80% Not bad.....