Breakthrough in creation of artificial blood

Jelly-like synthetic particles which mimic tiny cells in size and shape may be the first step towards developing truly artificial blood, scientists believe.

The "hydrogel" nanoparticles measuring just six micrometres (0.006 millimetres) across could also be used to fight cancer. They have the important property of being highly flexible, just like real red blood cells.

This means they remain longer in the circulation before being filtered out, and can slip through narrow capillaries or microscopic pores in organs.

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Scientists are yet to test the particles' ability to perform functions such as transporting oxygen or carrying anti-cancer drugs. But early experiments indicate they have exciting medical potential.

One possible application is unlimited supplies of man-made blood.