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Elderly adults are living longer, and causes of death are shifting. At the same time, autopsy rates are at or near their lowest in history.
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
The types of cancer that alpha interferons are used to treat include hairy cell leukemia, melanoma, follicular non-Hodgkin's lymphoma, and AIDS-related Kaposi's sarcoma.
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.
Opium has influenced much of the world's most popular literature. The following authors were all opium users, of varying degrees: Lewis Carroll, Charles, Dickens, Arthur Conan Doyle, and Oscar Wilde.
![(A) Each bronchiole terminates in an alveolar sac, a group of alveoli; (B) alveoli encased by networ](https://biology-forums.com/gallery/47/medium_14755_10_09_12_7_13_31_84891921.jpeg)
![In one-male group species, extra males typically reside in all-male “bachelor” groups. These are Han](https://biology-forums.com/gallery/47/medium_269691_26_01_15_5_55_26_204481514.jpeg)