While many patients with asthma are allergic to pollen or pet dander, new evidence suggests inner city asthma patients may be most allergic to cockroach remains found in household dust. Dr. Daniel Remick, chair and professor of pathology at Boston University School of Medicine, discusses his new research demonstrating the relationship between household dust from city buildings and asthma. What implications for treatment does this research provide? Will there be an attempt to desensitize children to this cockroach allergen in the future? Dr. Maurice Pickard hosts.