|
|
Warfarin was developed as a consequence of the study of a strange bleeding disorder that suddenly occurred in cattle on the northern prairies of the United States in the early 1900s.
Patients who cannot swallow may receive nutrition via a parenteral route—usually, a catheter is inserted through the chest into a large vein going into the heart.
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.
The lipid bilayer is made of phospholipids. They are arranged in a double layer because one of their ends is attracted to water while the other is repelled by water.
![Rates of water loss by two turtles and a tortoise indicate an inverse relationship between the dryne](https://biology-forums.com/gallery/47/medium_33_08_09_11_10_42_35_16841686.jpeg)
![Risks of infectious disease increase in (a) high-density agricultural populations compared to (b) lo](https://biology-forums.com/gallery/47/medium_273688_23_02_15_7_45_13_208671102.jpeg)