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. Author manuscript; available in PMC: 2010 May 1.
Published in final edited form as: J Immunol. 2009 May 1;182(9):5770–5777. doi: 10.4049/jimmunol.0900127

FIGURE 5.

FIGURE 5

Serum chymase activity in mastocytosis. Chymase activity and immunoreactive mast cell tryptase was measured in serum from subjects with various types of mastocytosis. Chymase activity was measured using the RETF-4NA microtiter plate assay. Total immunoreactive α plus βserum tryptase (protryptase plus mature tryptase) was measured by enzyme-linked immunosorbent assay. Each symbol represents data from a single subject and sample. The dashed line indicates the active chymase detection threshold (~0.03 ng/ml) of the assay. Mastocytosis abbreviations are as follows: ASM, aggressive systemic mastocytosis; ISM, indolent systemic mastocytosis; CM, cutaneous mastocytosis.