H. Frei

2.1k citations

22 papers · 1.8k indexed · 1 hit paper · h-index 12

Impact in

Cancer Research top 2%
- Carcinogens and Genotoxicity Assessment
Health, Toxicology and Mutagenesis top 5%
- Environmental Toxicology and Ecotoxicology

Papers in ⓘ

Molecular Biology 8
- Insect Resistance and Genetics 4
- Cancer therapeutics and mechanisms 2
- Plant Toxicity and Pharmacological Properties 2
Plant Science 7
- Pesticide Exposure and Toxicity 3
- Genetically Modified Organisms Research 2

Co-authors: F.E. Würgler (13 shared papers)Ulrich Gräf (5 shared papers)Alan J. Katz (3 shared papers)H. Juon (4 shared papers)C. B. Hall (2 shared papers)P.G. Kale (1 shared paper)Julie Clements (1 shared paper)Denise Howe (1 shared paper)
Journals: Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis (2 papers)Differentiation (1 paper)Mutation Research/Genetic Toxicology and Environmental Mutagenesis (1 paper)Mutagenesis (1 paper)Chemico-Biological Interactions (1 paper)
Partner nations: Switzerland Netherlands Israel

In The Last Decade

H. Frei

22 papers receiving 1.7k citations

Hit Papers

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Somatic mutation and recombination test in Drosophila melanogaster 1984 · 564 citations

Peers

Countries citing papers authored by H. Frei

Since Specialization

Citations

This map shows the geographic impact of H. Frei's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by H. Frei with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites H. Frei more than expected).

Fields of papers citing papers by H. Frei

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by H. Frei. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by H. Frei. The network helps show where H. Frei may publish in the future.

Co-authors

The 12 scholars most cited alongside H. Frei, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with H. Frei Line = papers co-authored together H. Frei links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 22 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Somatic mutation and recombination test in Drosophila melanogaster Environmental Mutagenesis ·Ulrich Gräf, F.E. Würgler, Alan J. Katz, H. Frei, H. Juon, C. B. Hall, P.G. Kale Hit paper breakdown →	1984	564
2	Statistical methods to decide whether mutagenicity test data from Drosophila assays indicate a positive, negative, or inconclusive result Mutation Research/Environmental Mutagenesis and Related Subjects ·H. Frei, F.E. Würgler	1988	450
3	Optimal experimental design and sample size for the statistical evaluation of data from somatic mutation and recombination tests (SMART) in Drosophila Mutation Research/Environmental Mutagenesis and Related Subjects ·H. Frei, F.E. Würgler	1995	192
4	Thirty compounds tested in the Drosophila wing spot test Mutation Research/Genetic Toxicology ·Ulrich Gräf, H. Frei, A. Kägi, Alan J. Katz, F.E. Würgler	1989	172
5	The genotoxicity of the anti-cancer drug mitoxantrone in somatic and germ cells of Drosophila melanogaster Mutation Research/Genetic Toxicology ·H. Frei, Julie Clements, Denise Howe, F.E. Würgler	1992	102
6	Structure/activity relationships of the genotoxic potencies of sixteen pyrrolizidine alkaloids assayed for the induction of somatic mutation and recombination in wing cells of Drosophila melanogaster Chemico-Biological Interactions ·H. Frei, Jürg Lüthy, Julia Brauchli, Ulrich Zweifel, F.E. Würgler, Christian Schlatter	1992	83
7	Induction of somatic mutation and recombination by four inhibitors of eukaryotic topoisomerases assayed in the wing spot test of Drosophila melanogaster Mutagenesis ·H. Frei, F.E. Würgler	1996	57
8	Genetic toxicity of six carcinogens and six non-carcinogens in the Drosophila wing spot test Mutation Research/Genetic Toxicology ·N. K. Tripathy, F.E. Würgler, H. Frei	1990	37
9	A pilot study on a new Drosophila spot test Mutation Research Letters ·Ulrich Gräf, H. Juon, Alan J. Katz, H. Frei, F.E. Würgler	1983	37
10	Aristolochic acid is mutagenic and recombinogenic in Drosophila genotoxicity tests Archives of Toxicology ·H. Frei, F.E. Würgler, H. Juon, C. B. Hall, Ulrich Gräf	1985	29
11	The vicinal chloroalcohols 1,3-dichloro-2-propanol (DC2P), 3-chloro-1,2-propanediol (3CPD) and 2-chloro-1,3-propanediol (2CPD) are not genotoxic in vivo in the wing spot test of Drosophila melanogaster Mutation Research/Genetic Toxicology and Environmental Mutagenesis ·H. Frei, F.E. Würgler	1997	18
12	Genotoxic activity of the anti-cancer drug methotrexate in somatic cells of Drosophila melanogaster Mutation Research Letters ·F.E. Würgler, Ulrich Gräf, H. Frei, H. Juon	1983	16
13	Genetic damage induced by X-rays or neutrons in spermatozoa of Drosophila melanogaster; differential processing in the oocytes of females carrying the DNA-repair-deficient mutants mei-9a and mus-101D1 Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis ·H. Frei	1982	9
14	Electron Microscopic Studies of Normal and Pathologic Human Spermatozoa Fertility and Sterility ·C.A. Joël, H. Frei, F. L. Hirshfeld	1951	7
15	[Differential radiosensitivity of the germ cells in Drosophila hydei males, lethal rates and the relevance of the species-specific genetic organization (author's transl)]. PubMed ·H. Frei	1974	4
16	Somatic mutation and recombination tests (SMART) in drosophila Mutation Research/Environmental Mutagenesis and Related Subjects ·H. Frei	1991	4
17	Development Capacities of Mixed Normal and Neoplastic 1(3)gl Imaginal Discs and Neuroblast Tissue in Drosophila hydei Differentiation ·Ž. Srdić, H. Frei	1980	3
18	Intragenic recombination at the white locus of Drosophila hydei Molecular and General Genetics MGG ·H. Frei	1975	3
19	Radiation-induced dominant lethality in oocytes of Drosophila hydei, with emphasis on differential sensitivity of the immature stages in class B Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis ·H. Frei	1974	2
20	Mutation, recombination and genetic organization in Drosophila hydei, compared to other Drosophila species. PubMed ·H. Frei	1978	2

About H. Frei

H. Frei is a scholar working on Molecular Biology, Plant Science, Cancer Research, Insect Science and Food Science, having authored 22 papers that have together received 1.8k indexed citations. Recurring topics across this work include Carcinogens and Genotoxicity Assessment (7 papers), Insect Resistance and Genetics (4 papers), Pesticide Exposure and Toxicity (3 papers), Insect behavior and control techniques (3 papers), Cancer therapeutics and mechanisms (2 papers), Plant Toxicity and Pharmacological Properties (2 papers), Insect and Pesticide Research (2 papers) and Genetically Modified Organisms Research (2 papers). The work is most often cited by research in Cancer Research (664 citations), Health, Toxicology and Mutagenesis (280 citations), Insect Science (228 citations), Biochemistry (107 citations) and Plant Science (615 citations). H. Frei has collaborated with scholars based in Switzerland, Netherlands and Israel. Frequent co-authors include F.E. Würgler, Ulrich Gräf, Alan J. Katz, H. Juon, C. B. Hall, P.G. Kale, Julie Clements, Denise Howe, Christian Schlatter and Jürg Lüthy. Their work appears in journals such as Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis, Differentiation, Mutation Research/Genetic Toxicology and Environmental Mutagenesis, Mutagenesis and Chemico-Biological Interactions.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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