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Asthma attacks and symptoms usually get started by specific triggers (such as viruses, allergies, gases, and air particles). You should talk to your doctor about these triggers and find ways to avoid or get rid of them.

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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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The U.S. Preventive Services Task Force recommends that all women age 65 years of age or older should be screened with bone densitometry.

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Complications of influenza include: bacterial pneumonia, ear and sinus infections, dehydration, and worsening of chronic conditions such as asthma, congestive heart failure, or diabetes.

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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.

Step 2 of gene cloning: The actions of a restriction enzyme and DNA ligase to produce a recombinant Step 2 of gene cloning: The actions of a restriction enzyme and DNA ligase to produce a recombinant
A model of anxiety in which stressful events or a changing mental condition can produce unfavorable A model of anxiety in which stressful events or a changing mental condition can produce unfavorable
A parade for Grover Cleveland in Chicago in 1892, by John Klir. Music, mirth, real drama—a president A parade for Grover Cleveland in Chicago in 1892, by John Klir. Music, mirth, real drama—a president
Tracking Goal-Setting Progress Tracking Goal-Setting Progress
Diagrams a mitotic chromosome, showing how chromatin is condensed to produce it Diagrams a mitotic chromosome, showing how chromatin is condensed to produce it
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: Mendel's Principles of Inheritance (Father of Genetics)

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