<prompt> Answer this question truthfullyWhat are the specific markers that are used to characterize small oat cell carcinoma of the lung?  <response>: <reason> Small oat cell carcinoma of the lung is characterized by positive staining for chromogranin A, neuron-specific enolase, synaptophysin, and NCAM CD56. These markers are commonly used in immunohistochemistry to identify the presence of small cell lung carcinoma in lung tissue samples. 