Red and white blood cells
Date: Around 1993
What is the difference between red and white blood cells?
One is red and the other white! Oops, sorry, just kidding. Red
blood cells have hemoglobin and carry oxygen. In some animals, such as
humans, they do not have nuclei. White blood cells are of several types.
Some are lymphocytes, which either produce antibodies to attack invaders (B
lymphocytes), or attack transplanted tissue (T-lymphocytes). There are also
other white blood cells involved in injury response, such as clotting, or in
other immune system actions (self-defense). White blood cells do not have
hemoglobin, and do have nuclei. They do not carry oxygen.
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Update: June 2012