Mindblown: a blog about philosophy.
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Biotaxis
Movement of an organism in response to an external stimulus.
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Biospectroscopy
Examination of tissue by use of a spectroscope.
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Biospectrometry
Use of a spectroscope to determine the amounts and kinds of substances in tissues.
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Biosafety level
A classification system to indicate the safety precautions required for those investigating microorganisms (esp. viruses known to be dangerous or lethal to those exposed to them). There are four BSLs, with BSL-4 requiring the highest level of security.
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Bios
A group of substances (including inositol, biotin, and thiamine) necessary for the most favorable growth of some yeasts.
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Bioptome
A tool used to obtain biopsies of the endomyocardium. It consists of a forceps (with small tissue cutting jaws) that is advanced into the ventricle along a catheter or guidewire.
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Biopterin
2-amino-4-hydroxy-6-( 1 ,2-hydroxypropyl) pteridine, important in metabolizing phenylalanine. A deficiency of biopterin is a rare cause of phenylketonuria.
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Suction biopsy
A technique for obtaining tissue by aspiration; e.g., to obtain tissue from the mucosa of the stomach and intestines.
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Sentinel node biopsy
A technique for identifying the initial site of cancer metastasis. After injection of a radioactive tracer directly into the tumor mass, the tissue is massaged to encourage uptake of tracer by lymphatic vessels. A negative biopsy of the first node infiltrated by the tracer suggests that the malignancy has not yet spread to neighboring regional…
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Percutaneous renal biopsy
Obtaining renal tissue for analysis with a needle inserted through the skin, usually done after the kidney has been localized by ultrasound, computed tomography, or angiography. This technique is used to establish a diagnosis of renal dysfunction, determine prognosis in patients with renal disease, evaluate the extent of renal injury, and determine appropriate therapy. The…
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