The H antigen at epithelial surfaces is associated with susceptibility to asthma exacerbation.
Innes AL, McGrath KW, Dougherty RH, McCulloch CE, Woodruff PG, Seibold MA, Okamoto KS, Ingmundson KJ, Solon MC, Carrington SD, Fahy JV. The H antigen at epithelial surfaces is associated with susceptibility to asthma exacerbation. Am J Respir Crit Care Med. 2011 Jan 15; 183(2):189-94.