http://community.advanceweb.com/blogs/al_1/archive/2009/05/27/blood-substitutes.aspxBlood substitutes have been studied for at least 70 years; the search continues. All of the first and second generations of these replacements for human blood have been discontinued. Some of the third generation products have also been discontinued. ThereenCommunityServer 2.1 SP2 (Debug Build: 61120.2)