The Mysterious Creature Here

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Nov 30, 2011 10:09
I talk about the mysterious creature today.
There are four creatures here.
Can these get along well with us in future?
Let me explain the outside of four creatures.
#1: He has a brown horn and a black horn.
#2: He has a brown horn.
#3: He has a black horn.
#4: He has not a horn completely.
Were you able to imagine these creatures?
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In fact, these are the creatures to use when I explain a blood type of ABO series.
The body is a red blood cell, and each horn shows A-antigen and B-antigen.
Then, #1:AB, #2:A, #3:B, #4:O
We call it O-type.......but actually, it was "Zero".
Can you catch me?