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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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Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.

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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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Normal urine is sterile. It contains fluids, salts, and waste products. It is free of bacteria, viruses, and fungi.

Structure of a DNA strand Structure of a DNA strand
Comparative structure of arteries, capillaries, and veins. Comparative structure of arteries, capillaries, and veins.
Compared with modern humans, Homo erectus has a larger face, lacks a chin and canine fossa, and has Compared with modern humans, Homo erectus has a larger face, lacks a chin and canine fossa, and has
Lymph node structure. Lymph node structure.
The structure of sphingosine The structure of sphingosine
The quaternary level of protein structure as seen in hemoglobin The quaternary level of protein structure as seen in hemoglobin
Video: Introduction to Eating Disorders

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