This can hurt forests, lakes, and streams and the animals that live there, as well as damage buildings and cars, and cause respiratory issues like asthma, bronchitis, and pneumonia in humans.
In a study published in May in Nature Immunology, they described how a single dose of the cells injected into animals bred to mimic the symptoms of asthma in effect cured them of the condition.
With nearly 500,000 asthma-related hospital admissions every year in America alone (often involving cases where the disease could have been properly controlled by drugs, but was not), the market could be large.