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385944 occurrences (No.46 in the rank) during 5 years in the PubMed. [no cache] 500 found
69) Clone induction frequency for the normal wing phenotype of EMS application group was observed to be 2.00.
--- ABSTRACT ---
PMID:23222692 DOI:10.1177/0748233712468019
2015 Toxicology and industrial health
* The use of endemic Iranian plant, Echium amoenum, against the ethyl methanesulfonate and the recovery of mutagenic effects.
- In this study, potential genotoxic effects of ethyl methanesulfonate (EMS) that caused mutagenicity in a variety of organisms were tried to resolve by the methanol and chloroform extract of Echium amoenum (EAmet and EAchl) Fisch. & C.A. Mey. from the family of Boraginaceae, which is an endemic plant, and is used as an alternative treatment among public in Iran. Somatic mutation and recombination test with Drosophila wing was used to determine the genotoxic and antigenotoxic effects in our investigations. For this purpose, 3-day-old transheterozygous larvae of mwh/flr(3) genotype of Drosophila melanogaster were used in all our experiments. The larvae were fed chronically on the Drosophila instant medium (DIM) including 1 ppm EMS. However, in another application group, different concentrations (1, 2 and 4 ppm) of EAmet and EAchl were added to DIM including 1 ppm EMS (EMS + EAmet and EMS + EAchl). Then, for the matured individuals, wing preparates were prepared within the mediums that include control group that has only DIM, negative control group that contains dimethyl sulfoxide and application groups in different concentrations that contain EMS, EMS + EAmet and EMS + EAchl. Clone induction frequency for the normal wing phenotype of EMS application group was observed to be 2.00. In the EMS + EAmet application group, the value of 1 ppm EAmet is 1.49, value of 2 ppm EAmet is 1.08 and value of 4 ppm EAmet is 0.72; in the EMS + EAchl application group, the value of 1 ppm is EAchl 1.33, value of 2 ppm EAchl is 0.67 and value of 4 ppm EAchl is 0.56 were determined. This decrease observed between EMS and all application groups in terms of total induction frequency is statistically significant (p < 0.05). These results concluded that chloroform extracts were more effective than the methanol extracts of E. amoenum.
--- ABSTRACT END ---
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--- WordNet output for group --- =>一団にする, 集める, 分派, 集団, グループ, 分類する, 演奏家グループ, 集まる, 分ける Overview of noun group The noun group has 3 senses (first 2 from tagged texts) 1. (1345) group, grouping -- (any number of entities (members) considered as a unit) 2. (1) group, radical, chemical group -- ((chemistry) two or more atoms bound together as a single unit and forming part of a molecule) 3. group, mathematical group -- (a set that is closed, associative, has an identity element and every element has an inverse) Overview of verb group The verb group has 2 senses (first 2 from tagged texts) 1. (4) group -- (arrange into a group or groups; "Can you group these shapes together?") 2. (1) group, aggroup -- (form a group or group together) --- WordNet end ---