Acellular vascular products

摘要

A product comprising a natural acellular xenogenic vascular tissue matrix having at least an80% reduction in DNA content as compared to an untreated control vascular tissue matrix and being antigenically inert by being substantially free of epitopes capable of reacting with pre-formed human antibodies and also without having the ability to substantially activate complement. The invention also includes methods of preparing such products and uses of the products especially in bypass surgery.