We all know that there are several blood types that humans carry. Among these, the most prized is that of type O negative because it's considered universal and can be transferred to anyone.

If a person in need of a blood transfusion receives blood incompatible with his own, his immune system will be triggered and his own antibodies will treat the new blood as foreign particles. What follows is often a patient in shock and another dead body in the morgue.

Shortages in blood supply has plagued the medical industry and humanitarian endeavors alike. Scientists in Denmark, however, think that they may be closing in on an answer to that problem.

Blood gets classified according to the distinct sugar molecules that each type carries. Type A and B have different sugars, while type AB has both. The sugar molecules known as "antigens" are absent in type O negative.

According to Dr. Henrik Claussen of the University of Copenhagen, bacteria Elizabethkingia meningosepticum, and Bacteroides fragilis yield special enzymes that can strip the antigens off the red blood cells and neutralize them so that any type can become neutral.

The blood conversion technique has been tested in labs and has proven that in an hour, 200 ml of blood can be neutralized. The product will soon be tested and if all goes well, will be applied to medical facilities worldwide.