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Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.
There are approximately 3 million unintended pregnancies in the United States each year.
Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.
Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.
Automated pill dispensing systems have alarms to alert patients when the correct dosing time has arrived. Most systems work with many varieties of medications, so patients who are taking a variety of drugs can still be in control of their dose regimen.
![Results of Mendel’s crosses using pea plants. The numbers represent the F2 plants showing a given ...](https://biology-forums.com/gallery/44/medium_6_23_01_22_6_49_23_44083871.jpeg)
![Distribution of skin color as measured by a reflectometer at a wavelength of 685 nm. The results are](https://biology-forums.com/gallery/44/medium_1099382_26_01_22_1_24_35_441901615.jpeg)