Research Article

Assessment of Allergen-Responsive Regulatory T Cells in Experimental Asthma Induced in Different Mouse Strains

Figure 1

Assessment of airway resistance and eosinophilic inflammation in saline or OVA-challenged A/J, BALB/c, or C57BL/6 mice. Lung resistance was induced by increasing concentrations of methacholine bronchoprovocation, evaluated 24 h after the last OVA challenge (a). Photomicrographs of representative airways stained by Sirius Red of saline-challenged A/J (b), BALB/c (c), or C57BL/6 (d) and OVA-challenged A/J (e), BALB/c (f), or C57BL/6 (g) mice (original magnification 1000x). Quantitative data for eosinophils is shown in (h). Values represent the of 4-6 animals per group. +, ++, and +++ as compared to the respective saline-challenged mouse strain group. #, ##, and ### as compared to OVA-challenged C57BL/6 mice. as compared to OVA-challenged BALB/c mice.