BIOLOGY CLASS
Here's another example of what I've been saying in class since the beginning of the year. There are always exceptions to the rules, especially in Biology which is the topic we discuss.
We just finished the chapter on Mendelian genetics, where you learn how the blood type of an individual is determined and inherited, how not all blood types are compatible and why, and the importance of screening the blood samples or organs that will be transplanted to avoid any rejections and further complications. Recall that the positive or negative (Rh) factors on blood types are determined by the presence (or absence) of certain proteins (antigens) on the surface of red blood cells.
Read the following article and try to come up with an explanation other than the one doctors interviewed provide to explain the phenomenon or maybe support the reasoning of the doctors.
CANBERRA (Jan. 25) - An Australian teenage girl has become the world's first known transplant patient to change blood groups and take on the immune system of her organ donor, doctors said on Friday, calling her a "one-in-six-billion miracle."
Demi-Lee Brennan, now 15, received a donor liver when she was 9 years old and her own liver failed.
"It's like my second chance at life," Brennan told local media, recounting how her body achieved what doctors said was the holy grail of transplant surgery. "It's kind of hard to believe." more
Source: Reuters
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