Mindblown: a blog about philosophy.
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Blind sight
The ability to see that occurs in persons who are blind because of a brain lesion rather than damage to the eye. It is manifested by their being able to reach for and track an object. These individuals apparently do not know they can see.
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Sigh
A deep inspiration followed by a slow audible expiration. A prolonged inhalation followed by a quick exhalation, or a brief inhalation succeeded by a prolonged, drawn-out exhale. This phenomenon may occasionally arise from holding one’s breath during deep concentration, but typically, it has a nervous origin.
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Molecular sieve
A type of sieve in which the molecular material present in the gel or crystal will adsorb molecules of a certain kind and let others pass.
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Sieve
A device consisting of a mesh with holes of uniform size. It is used to separate particles above a certain size from solutions or powders. A tool that is commonly used to sift or separate coarser particles from finer ones is known as a sieve. This device typically features a separating surface that is composed…
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Siderosome
A reticulocyte in which iron-containing granules are present.
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Hepatic siderosis
Excessive deposition of iron in the liver, found in patients with cirrhosis and hemochromatosis.
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Siderosis of the central nervous system
A rare neurological condition marked by bilateral sensorineural hearing loss, often with gait disturbance, cognitive impairment, and myoclonus. Excessive quantities of hemosiderin are found in the leptomeninges and subpial regions of the brain.
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Siderophore
A macrophage that contains hemosiderin.
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Siderophilin
Any of several iron-binding proteins in the body, e.g., transferrin.
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Sideroblast
A ferritin-containing normoblast in the bone marrow. Sideroblasts constitute from 20% to 90% of normoblasts in the marrow. The ferritin gives a positive Prussian-blue reaction, indicating the iron is ionized and not bound to the heme protein.
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