Immunotherapy, allergy
Stimulation of the immune system with gradually increasing doses of the substances to which a person is allergic. The aim of allergy immunotherapy is to modify or stop the allergy by reducing the strength of the IgE response. This form of treatment is very effective for allergies to pollen, mites, animal dander, and especially, stinging insects.
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- Immunotoxin
A hybrid molecule created by coupling an antibody or antigen with part or all of a toxin. The hybrid molecule combines the specificity of the antibody or antigen with the toxicity of the toxin. The possible targets of immunotoxins include cancer cells and cells containing HIV.
- Impact
To lodge firmly or wedge in. For example, a molar tooth that is growing up and against an adjacent tooth is impacting the tooth next to it.
- Impaction, dental
The pressing together of teeth. For example, molar teeth (the large teeth in the back of the jaw) can be impacted, cause pain, and require pain medication, antibiotics, and surgical removal.
- Impaired glucose tolerance
Oral glucose tolerance test .
- Imperforate anus
A birth defect in which the rectum is a blind alley and there is no anus. Imperforate anus occurs in about 1 in 5,000 births, and it can be corrected by surgery.