Typing

Antigens located on the surface of red blood cells determine the type of blood you have. We will be looking for the presence of A, B, Rh, M, and N antigens. For example, if you have A antigens on your red blood cells, you have type A blood. If you have B antigens on your red blood cells, you have type B blood. If you have both of these antigens, you have type AB blood. If you have neither of these antigens present, you have type O blood.

In the U.S. white population, 45% have type O blood, 41% have type A blood, 10% have type B blood, and 4% have type AB blood. In the U.S. black population, 47% have type O blood, 28% have type A blood, 20% have type B blood, and 5% have type AB blood.

In the U.S. white population, 85% have Rh positive blood and 15% have Rh negative blood. In the U.S. black population, 88% have Rh positive blood and 12% have Rh negative blood.

Twenty percent of the population has the M antigen. Thirty percent of the population has the N antigen. Fifty percent of the population has both the M and N antigens.

Exercise 26.3

Materials:

3 clean microscope slides Cotton ball soaked in alcohol Dry cotton balls Sterile disposable lancet 5 toothpicks

Typing sera - Anti-A, Anti-B, Anti-Rh, Anti-M, Anti-N

Wax pencil

Slide warming box

Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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