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Author Question: The DSM-5 criteria for cyclothymic disorder involves all of the following EXCEPT a) it must have ... (Read 66 times) |
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.
The average human gut is home to perhaps 500 to 1,000 different species of bacteria.
IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.
The human body produces and destroys 15 million blood cells every second.
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.