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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.
The average person is easily confused by the terms pharmaceutics and pharmacology, thinking they are one and the same. Whereas pharmaceutics is the science of preparing and dispensing drugs (otherwise known as the science of pharmacy), pharmacology is the study of medications.
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.
The senior population grows every year. Seniors older than 65 years of age now comprise more than 13% of the total population. However, women outlive men. In the 85-and-over age group, there are only 45 men to every 100 women.
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
![Human immunodeficiency virus gains entry into helper T cells, uses the cell DNA to replicate, interf](https://biology-forums.com/gallery/47/medium_14755_01_10_12_7_59_22_9233407.jpeg)
![Cortical EEG recorded during epileptic attacks. Notice that each trace is characterized by epileptic ...](https://biology-forums.com/gallery/30/medium_548020_06_06_17_11_06_38_303652166.png)