Wiktionary
tryptase
n. (context enzyme English) Any of a group of serine proteinase contained in mast cells
Wikipedia
Tryptase
Tryptase (, ) is the most abundant secretory granule-derived serine proteinase contained in mast cells and has been used as a marker for mast cell activation. Club cells contain tryptase which is believed to be responsible for cleaving the hemagglutinin surface protein of influenza A virus, thereby activating it and causing the symptoms of flu.
Usage examples of "tryptase".
It’s not very accurate, but we could look for tryptase levels, too, in the event she had an anaphylactic response.