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It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

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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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Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

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Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

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By definition, when a medication is administered intravenously, its bioavailability is 100%.

The anterior pituitary is sometimes called the master gland because it secretes many hormones that r The anterior pituitary is sometimes called the master gland because it secretes many hormones that r
Historian James Merrell notes several errors in Benjamin West’s famous 1771 painting, William Penn’s Historian James Merrell notes several errors in Benjamin West’s famous 1771 painting, William Penn’s
In this cartoon, Boss Tweed welcomes cholera—a skeletal figure of death carrying a handbag from “Asi In this cartoon, Boss Tweed welcomes cholera—a skeletal figure of death carrying a handbag from “Asi
C. Wright Mills (1916-1962) was a controversial figure in sociology because of his analysis of the ... C. Wright Mills (1916-1962) was a controversial figure in sociology because of his analysis of the ...
Continuum of aggression. Based on an unpublished figure by Joanne DeSanto Iennaco. Continuum of aggression. Based on an unpublished figure by Joanne DeSanto Iennaco.
Punnett square of the dihybrid cross shown in Figure 3.8. There are two combinations of dominant and Punnett square of the dihybrid cross shown in Figure 3.8. There are two combinations of dominant and
Video: Hershey Chase Experiments

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