Table 1.

Distribution of Tryptase-Positive Cells Showing CCR3 Expression in Different Tissues

Tissue	No. of cells/field (×250)
	Tryptase+	Tryptase+/CCR3+
Gut
Mucosa	25.5 ± 1.5	4.4 ± 0.5 (17%)
Submucosa	22.7 ± 3.1	19.7 ± 1.2 (87%)
Ulcerative colitis	46.2 ± 9.8	30.2 ± 9.7 (65%)
Lung	19.4 ± 4.0	2.8 ± 0.5 (14%)
Skin
Systemic sclerosis	16.6 ± 4.3	13.0 ± 3.5 (72%)

Cells were costained for tryptase and CCR3 as described in Methods. Mean values (±SE) of absolute numbers of cells staining for tryptase (tryptase+) or for both (tryptase+/CCR3+), found by counting five consecutive microscopic fields (×250) for each section, are reported in the first and second columns, respectively. Values in parentheses express percentages of tryptase+/CCR3+ versus tryptase+ cells found in every tissue.