1. Exposure to multiple indoor allergens in US homes and its relationship to asthma 
Päivi M. Salo, PhD, Samuel J. Arbes, DDS, MPH, PhD, Patrick W. Crockett, PhD, Peter S. Thorne, PhD, Richard D. Cohn, PhD, Darryl C. Zeldin, MD 
Journal of Allergy and Clinical Immunology 
Volume 121, Issue 3, Pages e2 (March 2008)
DOI: /j.jaci
Copyright © 2008 American Academy of Allergy, Asthma & Immunology Terms and Conditions

2. Fig 1
Overall burden of multiple allergens in US homes. The bar graph shows percentages (± SEs) of homes with detectable (A) and increased (B) levels of allergens by numbers of allergens exceeding allergen-specific thresholds.
Journal of Allergy and Clinical Immunology  , e2DOI: ( /j.jaci )
Copyright © 2008 American Academy of Allergy, Asthma & Immunology Terms and Conditions

3. Fig 2
Relationship between allergen burden and endotoxin levels. The bar graph displays the geometric mean concentration of endotoxin (the mean of all sampling location concentrations) across the levels of allergen burden (± geometric standard error).
Journal of Allergy and Clinical Immunology  , e2DOI: ( /j.jaci )
Copyright © 2008 American Academy of Allergy, Asthma & Immunology Terms and Conditions