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Unformatted text preview: Using the questions above, attempt to determine Patient Zero for Simulation 2.
1. Where did the infection start?
Explain.
Could you locate Patient Zero with absolute certainty?
Additional Questions
1. What additional information would you want to collect to help you determine which person initially had the
infected tube? How do you think this assignment applies to infection in the real world?
2. What characteristics of a disease might make that disease more transmissible?
3. What characteristics of a disease might cause that disease to be less transmissible?
4. How do vaccines prevent infection from spreading?
Part B: Blood Typing
Understanding Blood Types
Red blood cells have many types of molecules attached to the plasma membrane. Some of these molecules are very impor-
tant in determining blood type. The ABO blood group system is based on the presence of antigenic carbohydrates on the
plasma membrane of red blood cells. Red blood cells can have A antigen or B antigen, both A and B antigens, or neither
of these antigens. If a person's blood cells have the A antigen, the person has type A blood; if someone's blood cells have
the B antigen, the person has type B blood. When a person's red blood cells have both the A and the B antigens on the
plasma membrane, the person has type AB blood. A person has type O blood if the red blood cells lack both antigens.
A different blood grouping system, the Rh system, depends on only one antigen, the Rh antigen. If the red blood ce
have the Rh antigen, the person is Rh positive (Rh+). If the red blood cells don't have the Rh antigen, the person is R
negative (Rh-).
The ABO and Rh blood groups are very important. When we talk about determining someone's blood type, we a
typically trying to figure out both their ABO antigens and their Rh antigen. For example, if someone has the A antig
LAB 6 The Immune System...
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