Antisperm antibodies in infertile women: subclass distribution of immunoglobulin (Ig) A antibodies and removal of IgA sperm-bound antibodies with a specific lgA1 protease*†*Presented at the Conjoint Meeting of the American Fertility Society and the Canadian Fertility and Andrology Society, October 11 to 14, 1993, Montreal, Quebec, Canada.†Supported in part by a United States Public Health Service grant AI-28147. William H. Kutteh is the recipient of a Berlex Foundation Scholar Award.