|
|
The human body produces and destroys 15 million blood cells every second.
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.
GI conditions that will keep you out of the U.S. armed services include ulcers, varices, fistulas, esophagitis, gastritis, congenital abnormalities, inflammatory bowel disease, enteritis, colitis, proctitis, duodenal diverticula, malabsorption syndromes, hepatitis, cirrhosis, cysts, abscesses, pancreatitis, polyps, certain hemorrhoids, splenomegaly, hernias, recent abdominal surgery, GI bypass or stomach stapling, and artificial GI openings.
Malaria mortality rates are falling. Increased malaria prevention and control measures have greatly improved these rates. Since 2000, malaria mortality rates have fallen globally by 60% among all age groups, and by 65% among children under age 5.
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
![Fish come in many shapes and sizes. This is a sea dragon, a close relative of the seahorse. Their le](https://biology-forums.com/gallery/47/medium_27689_23_04_12_3_05_15.jpeg)
![Bronchogenic carcinoma. An illustration of a sectioned lung that contains tumors associated with a b](https://biology-forums.com/gallery/47/medium_14755_11_11_12_7_23_10_100512194.jpeg)