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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.
A seasonal flu vaccine is the best way to reduce the chances you will get seasonal influenza and spread it to others.
Autoimmune diseases occur when the immune system destroys its own healthy tissues. When this occurs, white blood cells cannot distinguish between pathogens and normal cells.
Blastomycosis is often misdiagnosed, resulting in tragic outcomes. It is caused by a fungus living in moist soil, in wooded areas of the United States and Canada. If inhaled, the fungus can cause mild breathing problems that may worsen and cause serious illness and even death.
Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
![The pancreas. This organ sits just below the stomach and is both an exocrine and an endocrine gland.](https://biology-forums.com/gallery/47/medium_14755_28_08_12_1_42_25_8233102.jpeg)
![Renal calculi (stones) can form in several areas within the urinary tract. When they form in the kid](https://biology-forums.com/gallery/47/medium_14755_05_10_12_4_17_10_92872103.jpeg)
![Healed bone fractures can provide clues about activities and fresh fractures can yield information a](https://biology-forums.com/gallery/47/medium_273688_23_02_15_8_21_32_209041120.jpeg)