| L-phase variants | Bacterial variant's which do not have rigid cell walls but which may contain varying amounts of cell wall material; they are spherical to coccobacillary in shape and vary in size from small bodies that pass through filters which retain bacteria to bodies that are larger than the bacterial form; they are Gram-negative and resistant to penicillin; some revert to the bacterial phase upon removal of the inducing substance, whereas others do not; the variant's differ greatly from the parent bacterial cells in mode of reproduction, physiology, growth requirements, and individual and colonial morphology; they are generally considered to be nonpathogenic, even if derived from a pathogenic bacterium. Origin: L. Fr. Lister Institute (05 Mar 2000) |
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| L-phase variant |
L-forms are bacterial spheroplasts or protoplasts originating from normal bacteria following partial (spheroplasts) or complete (protoplasts) removal of the cell wall. The formation of L-forms can be either spontaneous (occurring during certain phase of growth) or artificial (suppression of the rigid cell wall by stimuli such as enzymes, heat-shock, or special L-form induction medium, etc. ...
Ãâó: www.hardydiagnostics.com/Glossary-L.html
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| L-phase v. |
a variant phase of certain bacteria, induced by osmotic shock, temperature shock, or the presence of antibiotics, and consisting of a spherical or ellipsoidal body without a rigid cell wall. The cells are capable of growth and multiplication; they may be stable or may revert to a normal bacterial cell. Called also L-form.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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