Histamine

Histamine

A protein that can be released as part of the body's immune system responses during an allergic reaction. Presence of histamine can lead to inflammation and swelling, which is why antihistamines often are prescribed for allergy symptoms.

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Industry/Domain: Health care
Category: Optometry
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histamine

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A biogenic amine neurotransmitter derived from the amino acid histidine.

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A vasoactive amine stored in mast cell granules which is released by antigen binding to IgE molecules on mast cells, causing dilation of local blood vessels and smooth muscle ...

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The defense substance responsible for most inflammation. It is synthesized from the amino acid histidine and is secreted by mast cells, basophils, and blood platelets. It ...

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A chemical released during the inþammatory response that increases capillary blood þow in the affected area, causing heat and redness.

histamine

Medical; Medical research

A chemical compound that is released into the blood during an allergy or when the body is fighting an infection.

histamine

Health care; Optometry

A protein that can be released as part of the body's immune system responses during an allergic reaction. Presence of histamine can lead to inflammation and swelling, which is ...

ophthalmoscope

Eyewear; Optometry

An optical instrument used to examine the external and internal parts of the eye, particularly the media and the fundus.

pantoscopic angle

Eyewear; Optometry

1. Angle in the vertical plane between the optical axis of a spectacle lens and the visual axis of the eye in the primary position, usually taken to be the horizontal. 2. Angle ...

optical material

Eyewear; Optometry

Transparent material capable of being manufactured into optical components.

optical radiation hazard

Eyewear; Optometry

Possibility of damage to the retina by optical radiation.

optical centre

Eyewear; Optometry

For practical purposes, the intersection of the optical axis with the front surface a lens.

ophthalmoscope

Optometry; Optometry

An optical instrument used to examine the external and internal parts of the eye, particularly the media and the fundus.

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