|
|
When Gabriel Fahrenheit invented the first mercury thermometer, he called "zero degrees" the lowest temperature he was able to attain with a mixture of ice and salt. For the upper point of his scale, he used 96°, which he measured as normal human body temperature (we know it to be 98.6° today because of more accurate thermometers).
Disorders that may affect pharmacodynamics include genetic mutations, malnutrition, thyrotoxicosis, myasthenia gravis, Parkinson's disease, and certain forms of insulin-resistant diabetes mellitus.
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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.
About 80% of major fungal systemic infections are due to Candida albicans. Another form, Candida peritonitis, occurs most often in postoperative patients. A rare disease, Candida meningitis, may follow leukemia, kidney transplant, other immunosuppressed factors, or when suffering from Candida septicemia.
![Old-growth redwood forest in western North America. Redwoods are the tallest trees in the world, wit](https://biology-forums.com/gallery/47/medium_33_28_08_11_12_01_59_15502383.jpeg)
![A scene from a kelp forest off the west coast of North America. Like terrestrial forests, kelp fores](https://biology-forums.com/gallery/47/medium_33_28_08_11_12_15_40_1590372.jpeg)