umls-concept:C1171362 | skos:definition | NCI: Refers to the amount of a protein made in a cell. The study of protein expression in cancer cells may give information about a specific type of cancer, the best treatment to use, and how well a treatment works.,NCI: The biosynthesis of new (often sets of distinct, functionally related) protein products, usually involving new mRNA transcripts, typically in response to an activating stimulus. | lld:umls |