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For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.

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Methicillin-resistant Staphylococcus aureus or MRSA was discovered in 1961 in the United Kingdom. It if often referred to as a superbug. MRSA infections cause more deaths in the United States every year than AIDS.

Methicilli ...
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.

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Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

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Stevens-Johnson syndrome and Toxic Epidermal Necrolysis syndrome are life-threatening reactions that can result in death. Complications include permanent blindness, dry-eye syndrome, lung damage, photophobia, asthma, chronic obstructive pulmonary disease, permanent loss of nail beds, scarring of mucous membranes, arthritis, and chronic fatigue syndrome. Many patients' pores scar shut, causing them to retain heat.

Herniated disk. A herniated disk is a protrusion of the disk’s gelatinous center, called the nucleus Herniated disk. A herniated disk is a protrusion of the disk’s gelatinous center, called the nucleus
a Hyenas and other scavengers may have competed with early hominins for access to carcasses. a Hyenas and other scavengers may have competed with early hominins for access to carcasses.
A replaceable PROM used in an older General Motors computer. Notice that the sealed access panel ... A replaceable PROM used in an older General Motors computer. Notice that the sealed access panel ...
Typical quick-connect steps. Typical quick-connect steps.
Removing the bed from a pickup truck makes gaining access to the fuel pump a lot easier. Removing the bed from a pickup truck makes gaining access to the fuel pump a lot easier.
Water Access Water Access
Video: Ultrasound of a Fetus (Sonogram)

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