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Blood types are often perceived as a fixed aspect of human biology. But in rare instances, they can actually change. So, if ...
There are over 600 other known antigens, and the absence or presence of them creates "rare blood types," says the American Red Cross. However, statistically, AB negative is rarer than other blood ...
GEORGE TOWN: The country is running low on blood supply, especially the rare negative blood type. According to Penang Hospital, negative blood types are found in only about 5% of the donors in ...