This week in The Lancet: Relation between house-dust endotoxin exposure, type 1 T-cell development, and allergen sensitisation in infants at high risk of asthma. Registration to The Lancet is required, but remains free. Though now access to some full text articles is restricted to subscribers only. The study is interesting because it suggests that dusty homes may prevent allergies. I'll run upstairs and tell my kids to stop cleaning their rooms!