zone of inhibition

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Related to zone of inhibition: Minimum inhibitory concentration

zone of in·hib·i·tion

(zōn in'hi-bish'ŭn)
The area around an antibiotic disc that contains no bacterial growth.

zone of inhibition

an area of GROWTH inhibition around a point source, within a lawn of cultured organisms on a solid MEDIUM, due to the action of a growth-inhibitory substance, such as an ANTIMICROBIAL AGENT, present at the source. See also PLAQUE.


an encircling region or area; by extension, any area with specific characteristics or boundary. See also zona.

autonomous innervation zone
areas of innervation supplied by a single nerve, as for example the patch of skin on the medial side of the horse fore pastern which is supplied solely by the median nerve; used to assess the integrity of individual nerves.
ciliary zone
the outer of the two regions into which the anterior surface of the iris is divided by the angular line.
comfort zone
an environmental temperature between 55° and 70° F (13° and 21° C) with a humidity of 30 to 55%.
epileptogenic zone
an area, stimulation of which may provoke an epileptic seizure.
zone of inhibition
the area without bacterial growth surrounding an antimicrobial-impregnated disk in an antimicrobial sensitivity test.
provisional calcification zone
in developing bone longitudinal tubes of mineralized matrix which surround hypertrophic chondrocytes.
transitional zone
the circle in the equator of the lens of the eye in which epithelial fibers are developed into lens fibers.
References in periodicals archive ?
The bacteriocin from the isolate DM15 showed clear zone of inhibition against gram positive bacteria such as Staphylococcous aureus, Staphylococcus epidermis, Bacillus cereus, Pediococcus pentosaceus like bacteriocin from other lactic acid bacteria.
Blunting of zone of inhibition between cefotaxime and/ or ceftazidime and cefoxitin or reduced susceptibility to ceftazidime or cefotaxime and cefoxitin suggest production of AmpC [beta]-lactamase.
3] * Average of three readings Table 2: Antibacterial activity of PI Loaded TSP film and Band- aid against various bacteria Organism Zone of Inhibition in mm * PI loaded TSP Band-aid Escherischia coli 25 22 Shigella dysentrae 30 20 Pseudomonas aeruginosa 26 21 Bacillus subtilis 25 23 * Average of three readings Table 3: Results of wound area ([mm.
The zone of inhibition was measured, and the colonies at the halo region were used to create the next subculture, "Subculture Three.
A synergistic zone of inhibition which must have been normally present between EDTA and ceftazidime due to MBL production was not observed with these two isolates.
3) An increase in the zone of inhibition by [greater than or equal to] 5 mm with sulbactam compared to the antibiotic alone is a positive confirmation for an ESBL organism.
After proper incubation, clear zone of inhibition around the point of application of sample solution were measured which is expressed in millimeter (mm).
The zone of inhibition (mm) was measured from the boundary of the disc after cultivation at 37[degrees]C for 48 h.
The interesting aspects of the antibacterial screening by the Mulluvadi I and CO3 Dimethyl sulfoxide (DMSO) extract, uncovered its positive response by developing significant clear zone of inhibition against wide range of bacterial strains namely [Streptococcus pyogenes, Staphylococcus aureus, Pseudomonas aureginosa, Eschericia coli] which confirms its antibacterial potential.
The zone of inhibition was determined by placing a definite size of film into discs made in inoculated solidified nutrient agar medium in a petriplate.
The disc diffusion method is highly effective for rapidly growing microorganism and the activities of the test compounds are expressed by measuring the diameter of the zone of inhibition.
If possible, students measure the zone of inhibition using a small ruler (calipers work great, if available).