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Cancer cells showed moderate cytoplasmic positivity with additional membranous staining in several cases. The majority of testicular cancers and carcinoids along with several endometrial and pancreatic cancers were strongly stained. Most lung cancers as well as several liver, renal and skin cancers were weakly stained or negative.
MOS is a serine/threonine kinase that activates the MAP kinase cascade through direct phosphorylation of the MAP kinase activator MEK (MAP2K1; MIM 176872) (Prasad et al., 2008 [PubMed 18246541]).[supplied by OMIM, Jul 2009]