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The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

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The horizontal fraction bar was introduced by the Arabs.

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Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

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Human neurons are so small that they require a microscope in order to be seen. However, some neurons can be up to 3 feet long, such as those that extend from the spinal cord to the toes.

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According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Specialized cells capable of dormancy. Specialized cells capable of dormancy.
B and T Cells B and T Cells
Direct immunoassays. A labeled antibody binds directly to the antigen. The label on the antibody can ... Direct immunoassays. A labeled antibody binds directly to the antigen. The label on the antibody can ...
How to find the anti-derivative of a function (Part 3) How to find the anti-derivative of a function (Part 3)
Comparison between eukaryotic and prokaryotic cells Comparison between eukaryotic and prokaryotic cells
Over time, cells acquire mutations. Two independently acquired mutations in the same cell may be suf Over time, cells acquire mutations. Two independently acquired mutations in the same cell may be suf
Video: Embryonic development - Week 3

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