"hameoglobin substitute" means artificial chemicals other than haemoglobin that also has the ability to carry oxygen. They are used for patients with low haemoglobin (Hb) counts in the blood.
There are two types of Hb substitutes:
modified Hb and
perflourochemicals
Modified Hb- are basically Hb molecules extracted from red blood cells and genetically modified to be used in the free state (ie. existing by itself in the blood without actually being carried by the red blood cells). The problem with this is that Hb becomes unstable in its free state, causing it to breakdown rapidly in the body and therefore comes in no use. Genetically modifying these Hb molecules could overcome this problem.
Perflourochemicals- are synthetic materials that increase the solubility of oxygen in blood plasma up to fifty times. However, they need to be combined with other sibstances in the bloodstream in order to work, which is what scientists are curently working on.
I hope this helps.
Good luck with your HSC
hollownomore.