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Chromogranin A (CGA) in normal cells
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Fig. 1a. Appendix stained for CGA. Mucosal neuroendocrine cells are strongly stained, while the enterocytes are unstained. Fig. 1b. Langerhans islet of pancreas stained for CGA. Note the varying staining intensity. Glucagon producing cells contain more CGA than insulin and somatostatin producing cells
Fig. 1c. Brain stained for CGA showing strong granular reaction in cortical neurons and a weaker staining in the surrounding neuropil. Fig. 1d. Liver stained for CGA. Nerve fibres in a portal tract show strong reaction.
MV/SN/AS

Last update 15-02-2005