Mindblown: a blog about philosophy.
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Klebsiella rhinoscleromatis
Anaerogenic in fermented carbohydrates. Associated with rhinoscleroma, a chronic upper respiratory tract disease of S.E. Europe. A species that can cause rhinoscleroma, a destructive granuloma of the nose and pharynx.
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Klebsiella ozaenae
Species possessing some biochemical features of both Kl. rhinoscleromatis and Kl. pheumoniae, and antigenically close to the former.
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Klebsiella aerogenes
Species frequently associated with human urinary infection, MR- and VP+—a reversal of other Klebsiella results in these tests. Colonial form large, slimy or viscous. Species includes all 72 serotypes.
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Kauffmann antigens
Three types of antigen (L, A and B) carried on the surface of the enterobacteria, and significant owing to their ability to mask the 0 antigens, by means of which serological identification of such species is effected. The Kaufman antigens are differentiated by tests of thermolability, and resistance to the action of alcohol and formalin,…
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Kahn flocculation test
Test for syphilis, serum from positive cases flocculating when mixed with a lecithin-type ‘antigen’ extracted from normal beef heart muscle. Varying proportions of patient’s serum and saline- activated antigen are mixed, vigorously shaken, and diluted with further saline. A uniform opalescence is indicative of a negative reaction; flocculation indicates positivity. Some other infections (particularly leprosy…
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Iron sulphite agar
Tryptone – sodium sulphite – iron citrate agar, in stab cultures incubated at 55 C for ‘sulphide spoilage’ organisms in canned food. (Cl. nigrificans produces black colonies).
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Inspissator
Apparatus for the coagulation of slopes of serum, and egg, media by gentle heat (75 – 85°) provided by a thermostatically-controlled jacket of hot water or electrical elements. The necessary slant of the (originally) fluid medium is provided by angled racks.
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Infusion broth
Bacteriological nutrient broth, prepared by extracting soluble protein and other substances from cooked meat (usually beef), coagulated proteins being removed by filtration. After the addition of peptone and salt the reaction is adjusted and the product sterilized. Alternatively (Wright’s method) peptone and salt are added to minced beef and water prior to cooking, to achieve…
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Impression preparation
Method of fixing fragile organisms (such as the PPLO group) by touching the top of an excised colony in agar on to a coverslip, then: (a) allowing a liquid fixative such as Bouin’s to percolate through agar and colony on to the coverslip; or (b) removing agar and colony and flaming the coverslip gently. Such…
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Immune antibody
Specific antibody elaborated in response to artificial or natural stimuli such as vaccination or infection. Discussed more fully in Immunity. An antibody produced by immunization or as a result of transfusion of incompatible blood.
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