Dear Elias, Here are three sources for recombinant enterokinase: http://www.genscript.com/protein/Z02199-Porcine_Enterokinase_Lyophilized.html http://www.prospecbio.com/Enterokinase/?gclid=CMuXvK6-4a4CFUQUKgodjGwlXQ http://www.neb.com/nebecomm/products/productP8070.asp
Hope it helps! Take Care, Sean Seaver P212121 http://store.p212121.com/
