| CPC A61K 38/42 (2013.01) [A61K 9/1277 (2013.01); A61K 9/19 (2013.01); A61K 47/24 (2013.01); A61K 47/28 (2013.01); C07F 9/10 (2013.01)] | 9 Claims | 
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               1. A composition comprising: 
              (a) a phospholipid, 
                (b) cholesterol, 
                (c) an oxygen carrier, 
                (d) a lipid-amphiphile precursor compound, and 
                (e) an allosteric effector, 
                the lipid-amphiphile precursor having the formula: 
              ![]() or a salt or tautomer thereof, wherein: 
                R1 is a hydrophobic group, 
                R2 is 
              ![]() and 
                R3 is chosen from 
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