<prompt> Answer this question truthfullyWhat types of tumors can be identified using Chromogranin A, Synaptophysin, NCAM CD56, and Neuron Specific Enolase NSE when performing Immunohistochemistry?  <response>: <reason> When performing Immunohistochemistry, Chromogranin A, Synaptophysin, NCAM CD56, and Neuron Specific Enolase NSE can all be used to identify neuroendocrine and neuronal tumors. 