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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.

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People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

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The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

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Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

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Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.

Mutualisms, such as those that occur among plants and pollinators, generally involve large numbers o Mutualisms, such as those that occur among plants and pollinators, generally involve large numbers o
Southern Royal Albatross, Diomedea epomophora, is a large seabird from the albatross family. Southern Royal Albatross, Diomedea epomophora, is a large seabird from the albatross family.
Anatomy of the large intestine Anatomy of the large intestine
Employment Status of Food-Insecure Households Employment Status of Food-Insecure Households
As shown in the figure, a large open tank contains a layer of oil ( density 450 kg/m3) floating ... As shown in the figure, a large open tank contains a layer of oil ( density 450 kg/m3) floating ...
The large, white flowers of giant saguaro cactus (Carnegiea gigantea) produce sweet nectar. The flow The large, white flowers of giant saguaro cactus (Carnegiea gigantea) produce sweet nectar. The flow
Video: Osmosis - Isotonic, Hypotonic, and Hypertonic​ Solutions

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