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Hyperplasia is considered to be a physiological (normal) response to a specific stimulus, and the cells of a hyperplastic growth remain subject to normal regulatory control mechanisms. [5] However, hyperplasia can also occur as a pathological response, if an excess of hormone or growth factor is responsible for the stimuli.
A fluid or water deprivation test is a medical test [1] which can be used to determine whether the patient has diabetes insipidus as opposed to other causes of polydipsia (a condition of excessive thirst that causes an excessive intake of water). The patient is required, for a prolonged period, to forgo intake of water completely, to determine ...
Water testing being conducted at a treatment facility in Broken Bow, Oklahoma. Water testing is a broad description for various procedures used to analyze water quality. Millions of water quality tests are carried out daily to fulfill regulatory requirements and to maintain safety. [1] Testing may be performed to evaluate:
Quantitative response The measurement of the response to the stimulus is on a continuous scale (ex. blood sugar content, degree of color change in cell growth medium). [12] Quantal response The response is binary; it is a determination of whether or not an event occurs (ex. death of the subject). [12]
Focal nodular hyperplasia is not a neoplasm; it is believed to result from localized hyperplastic hepatocyte response to an underlying congenital arteriovenous malformation. [2] It consists of normal liver constituents in an abnormally organized pattern, grows in a stellate pattern and may display central necrosis when large. [ 5 ]
Bacteriological water analysis is a method of analysing water to estimate the numbers of bacteria present and, if needed, to find out what sort of bacteria they are. It represents one aspect of water quality. It is a microbiological analytical procedure which uses samples of water and from these samples determines the concentration of bacteria ...
In malignant hypertension these hyperplastic changes are often accompanied by fibrinoid necrosis of the arterial intima and media. These changes are most prominent in the kidney and can lead to ischemia and acute kidney failure. In the brain, a small cavity called a lacune is an ischemic cavity that can arise due to brain necrosis, due to ...
A methylene blue active substances assay, or MBAS assay, is a colorimetric analysis test method that uses methylene blue to detect the presence of anionic surfactants (such as a detergent or foaming agent) in a sample of water. An anionic surfactant detected by the color reaction is called a methylene blue active substance (MBAS). [1]