Lesch-Nyhan Syndrome; LNSHYPOXANTHINE GUANINE PHOSPHORIBOSYLTRANSFERASE 1; HPRT1; HPRT; Subcollection: Heritable Diseases; Affected: YES; Cells are only guaranteed with purchase of Gentaur Media and Gentaur Extra Cellular Matrix for appropriate cell culture, for 30 days from the date of shipment.