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# of Samples
18
Antigen in Blood
A
A and B
B
8
Human blood can contain the A antigen, the B antigen,
both the A and B antigens, or neither antigen. It may or
may not also contain the Rh antigen. Blood is called type
A-positive if the individual has the A and Rh but not the B
antigen. A person having only the A and B antigens is said
to have type AB-negative blood. A person having only the
Rh antigen has type O-positive blood. Other blood types
are defined in a similar manner. In a certain hospital, the
data, shown to the right, was recorded. Use a Venn
diagram to answer parts (a) through (h) about the blood
samples. For parts (d) through (h), the presence or
absence of antigens determines blood type.
28
14
24
cent
12
B and Rh
Rh
None
A and Rh
A, B, and Rh
9
6
ured
(a) How many samples were represented?
samples
en