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Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.
Sildenafil (Viagra®) has two actions that may be of consequence in patients with heart disease. It can lower the blood pressure, and it can interact with nitrates. It should never be used in patients who are taking nitrates.
Walt Disney helped combat malaria by making an animated film in 1943 called The Winged Scourge. This short film starred the seven dwarfs and taught children that mosquitos transmit malaria, which is a very bad disease. It advocated the killing of mosquitos to stop the disease.
There are over 65,000 known species of protozoa. About 10,000 species are parasitic.
Everyone has one nostril that is larger than the other.
![Retrograde pyelography (RP). Note the contrasting of the renal calyces, ureters, and bladder followi](https://biology-forums.com/gallery/47/medium_14755_05_10_12_4_17_11_9293297.jpeg)
![Retrograde pyelogram. A contrast medium is injected into the ureter using a cystoscope, and the X-ra](https://biology-forums.com/gallery/47/medium_14755_26_10_12_5_21_06_9671618.jpeg)