chromogranin immunostaining
Histochemical technique using chromogranin antibodies to identify and characterize neuroendocrine cells and tumors.
Full Definition
Chromogranin immunostaining is a widely used immunohistochemical method for detecting neuroendocrine differentiation in tissues. Chromogranins are acidic proteins found in neurosecretory granules of neuroendocrine cells and serve as reliable markers for this cell type. The staining technique employs specific antibodies against chromogranin A, B, or C to visualize neuroendocrine cells and assess their distribution and density. This method is particularly valuable in diagnosing neuroendocrine tumors, determining tumor grade, and distinguishing neuroendocrine neoplasms from other tumor types.
Usage
Usage note: Specify which chromogranin subtype (A, B, or C) when precise identification is important.
In Context
- "Positive chromogranin immunostaining confirmed the neuroendocrine nature of the pancreatic tumor." — pathology report
- "The intensity of chromogranin immunostaining correlated with the degree of neuroendocrine differentiation." — research paper