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Amoebae are the simplest type of protozoans, and are characterized by a feeding and dividing trophozoite stage that moves by temporary extensions called pseudopodia or false feet.

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Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

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Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.

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Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.

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Studies show that systolic blood pressure can be significantly lowered by taking statins. In fact, the higher the patient's baseline blood pressure, the greater the effect of statins on his or her blood pressure.

aby pygmy hippopotamus stands near its parent at a zoo in Jihlava, Czech Republic aby pygmy hippopotamus stands near its parent at a zoo in Jihlava, Czech Republic
The Head Start program was designed to increase the school readiness of low-income children. The Head Start program was designed to increase the school readiness of low-income children.
Example of an employee setup screen in a computerized payroll program. Example of an employee setup screen in a computerized payroll program.
Two classical models for the cooperative ligand binding by hemoglobin Two classical models for the cooperative ligand binding by hemoglobin
Shattered Dreams Program Shattered Dreams Program
Heterozygous female parent Heterozygous female parent
Video: Glucose Evaluation Procedure

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