(a) Mice were pre-treated with IP injection of isotype control or anti-TSLP mAb on days 0, 3 and 6. On day 6, mice were also injected ID with LTA. Skin samples at the injection site were harvested 48 hours post LTA treatment. (b) Increased epidermal thickness in skin treated ID with LTA. Tslp staining (red) is reduced by blocking anti-TSLP mAb in mice treated as described above. Bar = 80 mm. Dashed line represents epidermaldermal junction. (c) RT-PCR shows reduction in levels of Tslp, Mcpt8 (basophils) and Il-4 gene expression by treatment with Tslp blocking mAb. Data are mean ± SEM, n = 6, *P<0.05; **P<0.01.