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Author Question: Recall Betty's Student Story in the chapter. What does Betty consider to be advantageous about birth ... (Read 87 times) |
After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.
The human body produces and destroys 15 million blood cells every second.
Medication errors are more common among seriously ill patients than with those with minor conditions.
IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.
In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.