Mindblown: a blog about philosophy.
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Urea
A compound (CO(NH2)2), formed in the liver from ammonia produced by the deamination of amino acids. It is the principal end product of protein catabolism and constitutes about one half of the total urinary solids. The end-product of nitrogen metabolism, excreted in the urine. Chief nitrogenous constituent of urine. The chief end product of protein…
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Uracil
An anticancer drug that belongs to the family of drugs called alkylating agents. A pyrimidine base important as a component of ribonucleic acid (RNA). Its hydrogen-bonding counterpart in DNA is thymine. Pyrimidine base used in DNA. Nitrogen-containing base found in ribonucleic acid (RNA). One of the nitrogen-containing bases occurring in the nucleic acid RNA. A…
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Unguis
The inelastic, translucent, horny plate formed of flat cornified epidermal cells. A nail on a finger or toe.
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Unconscious
Experience which was once conscious, but was subsequently rejected, as the “personal unconscious”. That part of memory and mental functioning that is rarely subject to awareness. It is a repository for data that have never been conscious (primary repression) or that may have been conscious and are later repressed (secondary repression). Unaware; lacking the ability…
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Ulceration
The formation or development of an ulcer. The formation of an ulcer, a lesion on the surface of the skin or a mucous membrane caused by a loss of tissue, often with inflammation. The development of an ulcer. A suppurative or non-healing lesion on a surface such as skin, cornea, or mucous membrane. The development…
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Ubiquinone
A lipid-soluble benzoquinone which is involved in electron transport in mitochondrial preparations. The compound occurs in the majority of aerobic organisms, from bacteria to higher plants and animals. Coenzyme in the respiratory (electron transport) chain in mitochondria, also known as coenzyme Q or mitoquinone. Coenzyme Q, an electron carrier that is part of the respiratory…
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Tyrosine
A non-essential amino acid. In animals it is synthesized from phenylalanine. It is also the precursor of epinephrine, thyroid hormones, and melanin. An amino acid that is the precursor of three major neurotransmitters: norepinephrine, epinephrine, and dopamine. A non-essential amino acid, formed in the body from phenylalanine; the precursor for the synthesis of melanin (the…
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Typhimurium
Microbial assay which measures his-his+ reversion by chemicals which cause base substitutions or frameshift mutations in the genome of this organism.
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Tumor necrosis factor
Serum glycoprotein produced by activated macrophages and other mammalian mononuclear leukocytes which has necrotizing activity against tumor cell lines and increases ability to reject tumor transplants. It mimics the action of endotoxin but differs from it. It has a molecular weight of less than 70,000 kDa. Literally, tumor death factor. A cytokine (protein that helps…
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Tryptophan
An essential amino acid that is necessary for normal growth in infants and for nitrogen balance in adults. It is a precursor serotonin and niacin. An amino acid well-known to foster drowsiness. A major essential amino acid that is the precursor to serotonin. An essential amino acid; the precursor of the neurotransmitter 5- hydroxytryptamine (serotonin)…
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