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Approximately 70% of expectant mothers report experiencing some symptoms of morning sickness during the first trimester of pregnancy.

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Cyanide works by making the human body unable to use oxygen.

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Inotropic therapy does not have a role in the treatment of most heart failure patients. These drugs can make patients feel and function better but usually do not lengthen the predicted length of their lives.

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Although not all of the following muscle groups are commonly used, intramuscular injections may be given into the abdominals, biceps, calves, deltoids, gluteals, laterals, pectorals, quadriceps, trapezoids, and triceps.

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Oliver Wendell Holmes is credited with introducing the words "anesthesia" and "anesthetic" into the English language in 1846.

Examples of cell-to-cell communication based on the distance between cells Examples of cell-to-cell communication based on the distance between cells
Tactile communication among honeybees regarding food sources. Tactile communication among honeybees regarding food sources.
negative feedback mechanism negative feedback mechanism
Negative feedback control of a regulated variable. Negative feedback control of a regulated variable.
Negative feedback loops affecting hypothalamic and anterior pituitary tropic hormones. Negative feedback loops affecting hypothalamic and anterior pituitary tropic hormones.
Control of Homeostasis: Positive Feedback Control of Homeostasis: Positive Feedback
Video: Glucagon (glycogenolysis and gluconeogenesis)

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