| bacterial toxin | Any intracellular or extracellular toxin formed in or elaborated by bacterial cells. (05 Mar 2000) |
|---|---|
| bacterial toxins | Toxic substances formed in or elaborated by bacteria; they are usually proteins with high molecular weight and antigenicity; some are used as antibiotics and some to skin test for the presence of or susceptibility to certain diseases. (12 Dec 1998) |
| bacterial transformation | <microbiology> A genetics lab procedure where bacteria are induced to accept and incorporate into their genome foreign pieces of cell-less, isolated DNA, often in the form of a plasmid. The DNA to be introduced usually contains a selectable marker so that the bacteria which successfully incorporate the DNA can be selected for. (09 Oct 1997) |
| bacterial translocation | The passage of viable bacteria from the gastrointestinal tract to extra-intestinal sites, such as the mesenteric lymph node complex, liver, spleen, kidney, and blood. Factors that promote bacterial translocation include overgrowth with gram-negative enteric bacilli, impaired host immune defenses, and injury to the intestinal mucosa resulting in increased intestinal permeability. These mechanisms can act in concert to promote synergistically the systemic spread of indigenous translocating bacteria to cause lethal sepsis. (12 Dec 1998) |
| bacterial transposition | <molecular biology> A short sequence of DNA (known as a transposon) which can change location on the bacterial genome (the sum total of all of the bacterium's DNA) and contains genes which code for proteins that enable it to change location. They are useful because they can also contain genes for other things, like antibiotic resistance, and because they can be introduced into a bacterial genome by a researcher. (09 Oct 1997) |
| bacterial typing techniques | Procedures for identifying types and strains of bacteria. The most frequently employed typing systems are bacteriophage typing and serotyping as well as bacteriocin typing and biotyping. (12 Dec 1998) |
| bacterial vaccines | Suspensions of attenuated or killed bacteria administered for the prevention or treatment of infectious bacterial disease. (12 Dec 1998) |
| bacterial vaginitis | <gynaecology> A bacterial infection of the vaginal mucosa resulting in redness, pain and a vaginal discharge with a foul odour. (27 Sep 1997) |
| bacterial vegetations | Lesions of bacterial endocarditis that form anywhere on the endocardium but preferentially on higher pressure and injured areas and particularly valves. They may also appear on arterial intima and in a patent ductus arteriosus and other areas of shunt inside and outside the heart. (05 Mar 2000) |
| bacterial virus | <microbiology, virology> A virus which infects bacteria and is usually species-specific. (09 Oct 1997) |
| bacterial wilt disease | <botany> A plant disease common in cucumber and muskmelon caused by the bacteria Erwinia tracheiphila which causes wilting and shriveling of the stems and leaves. (09 Oct 1997) |
| vaginosis, bacterial | Polymicrobial, non-specific vaginitis associated with positive cultures of gardnerella vaginalis and other anaerobic organisms and a decrease in lactobacilli. It remains unclear whether the initial pathogenic event is caused by the growth of anaerobes or a primary decrease in lactobacilli. (12 Dec 1998) |
| gene expression regulation, bacterial | Any of the processes by which cytoplasmic or intercellular factors influence the differential control of gene action in bacteria. (12 Dec 1998) |
| genes, bacterial | The genetic material of bacteria. (12 Dec 1998) |
| genes, structural, bacterial | DNA sequences that code for RNA and for the proteins required for the enzymatic and structural function of bacterial cells. (12 Dec 1998) |