revertant

(redirected from revertants)
Also found in: Dictionary.

re·ver·tant

(rē-ver'tănt),
In microbial genetics, a mutant that has reverted to its former genotype (true reversion) or to the original phenotype by means of a suppressor mutation.
[L. revertans, pres.p. of reverto, to turn back]

revertant

(rĭ-vûr′tnt)
adj.
Having reverted to the normal phenotype, usually by a second mutation: a revertant mutant; revertant cells.
n.
A revertant organism, cell, or strain.

re·ver·tant

(rē-vĕr'tănt)
microbial genetics A mutant that has reverted to its former genotype (true reversion) or to the original phenotype by means of a suppressor mutation.
[L. reverto, to turn back]

revertant

see REVERSION.

Patient discussion about revertant

Q. Could it revert back to my mom? If yes, how to deal with it? my mom’s lump is removed, chemotherapy is just over and she is getting well. My mom is a tea and coffee lover. But with doctors advice she did cut down on tea/coffee say once in a week. Could it revert back to my mom? If yes, how to deal with it?

A. Tea and coffee do not have any impact on the breast cancer recurrence. Caffeine in the coffee needs to be monitored as it increases some symptoms for breast lumps which are not cancerous but can increase the risk for cancer. It doesn’t show any link in cancer recurrence. Tea has nothing to do with cancer recurrence rather it is being proved having green tea helps in reduction of the tumor. Your mom can have green tea, if she feels unsafe to have coffee or normal tea.

More discussions about revertant
Mentioned in ?
References in periodicals archive ?
The revertant colonies were counted, and the toxic effect was determined by viewing the background lawn under a stereo microscope.
Individual plate counts were recorded and the mean number of revertant colonies per plate as well as the standard deviation was calculated.
TABLE 2: Number of Salmonella typhimurium TA97, TA198, TA100, TA1535, and TA102 revertant colonies per plate in the presence of the PBN derivate following the preincubation procedure of the Salmonella/microsome assay in the absence (-) and in the presence (+) of exogenous metabolizing system from rat liver S9-mix.
Until alternative vaccines become commercially available, control of AHS will remain reliant on the use of AHSV-LAV coupled with the adoption of strategies to minimize the likelihood of natural dissemination of revertant and reassortant vaccine-derived viruses.
We defined a positive mutagenic response as a reproducible, dose-related response with a 2-fold or greater increase in revertants (rev) per plate relative to the DMSO control.
(1995) Expression of ril, a novel LIM domain gene, is down-regulated in Hras-transformed cells and restored in phenotypic revertants. Oncogene 10(1): 61-68.
Some "escaped" and persistent cultivated tetraploids in the Andes ("Araq" potatoes) and some putative "wild" species may be revertants from cultivation (Spooner et al.
There were no revertants exceeding three times the background average either with or without the metabolic activation system.
These results were confirmed by Kwon--Chung et al (1985) and they also showed that revertants with restored proteolytic activity also regained their virulence.
SR: spontaneous revertants. Positive controls: TA98: picrolonic acid (PA) (50 [micro]g/Petri dish) without S9, 475.0 [+ or -] 33.42, [His.sup.+] revertants; (2AA) 2-aminoanthracene (10 [micro]g/Petri dish) with S9, 2354.83 [+ or -] 222.49; TA100: methyl-N'-nitro-N-nitrosoguanidine (MNNG), (10 [micro]g/Petri dish) without S9, 5,881.17 [+ or -] 861.49, (CF) cyclophosphamide (500 [micro]g/Petri dish) with S9, 530.0 [+ or -] 60.97; TA102: mitomycin C (2 ng/Petri dish) without, 3,401.67 [+ or -] 703.37, 2AA (10 [micro]g/Petri dish) 1,264.83 [+ or -] 77.38.
Furthermore, on King's B agar plates where the Wrinkly Spreader is genetically unstable and rapidly generates Smooth-like revertants (phenotypically similar to the biofilm cheaters recovered from static microcosms), the Wrinkly Spreader has an even lower fitness (W = 0.15) 62].