Chromogranin A is localized in secretory granules of neurons and endocrine cells in tissues, including pituitary, adrenal medulla, thyroid, pancreatic islets, and the gastrointestinal tract. Neuroendocrine cells exhibit a fine granular immunoreactivity to Anti-Chromogranin A. It is widely recognized that co-expression of keratins and chromogranin A implies a neuroendocrine lineage. High expression of chromogranin A and negative staining with Anti-Keratin is a possible indication of paraganglioma. Positive staining for chromogranin A and neuron-specific enolase is representative of neuroendocrine neoplasms. Many pituitary adenomas and prolactinomas stain positively for chromogranin A.
Host
Mouse
Isotype
IgG1
Species
Human
Antigen
Chromogranin A
Clone No
IHC544
Buffer
Tris Buffer pH7.6 with BSA, and sodium azide as preservative