Lafras M. Steyn

2.0k total citations
40 papers, 1.6k citations indexed

About

Lafras M. Steyn is a scholar working on Infectious Diseases, Epidemiology and Molecular Biology. According to data from OpenAlex, Lafras M. Steyn has authored 40 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 24 papers in Infectious Diseases, 21 papers in Epidemiology and 20 papers in Molecular Biology. Recurrent topics in Lafras M. Steyn's work include Tuberculosis Research and Epidemiology (20 papers), Mycobacterium research and diagnosis (15 papers) and Bacterial Genetics and Biotechnology (11 papers). Lafras M. Steyn is often cited by papers focused on Tuberculosis Research and Epidemiology (20 papers), Mycobacterium research and diagnosis (15 papers) and Bacterial Genetics and Biotechnology (11 papers). Lafras M. Steyn collaborates with scholars based in South Africa, United States and United Kingdom. Lafras M. Steyn's co-authors include Gilla Kaplan, D. de Wit, Linda‐Gail Bekker, Gary Maartens, Steven A. Shoemaker, Mitchell L. Sogin, Harold Zappe, Barry N. Kreiswirth, Frank A. Post and Srinivas V. Ramaswamy and has published in prestigious journals such as Nucleic Acids Research, Journal of Biological Chemistry and Clinical Infectious Diseases.

In The Last Decade

Lafras M. Steyn

40 papers receiving 1.5k citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
Lafras M. Steyn South Africa 20 1.1k 972 496 305 163 40 1.6k
Chiyoji Abe Japan 21 1.2k 1.1× 1.3k 1.3× 540 1.1× 333 1.1× 85 0.5× 50 1.8k
Gill‐Han Bai South Korea 18 1.2k 1.2× 1.4k 1.5× 447 0.9× 367 1.2× 93 0.6× 27 1.8k
Mary Petrofsky United States 24 859 0.8× 1.0k 1.1× 166 0.3× 244 0.8× 294 1.8× 37 1.4k
Xiuqin Zhao China 24 1.2k 1.1× 1.1k 1.2× 551 1.1× 396 1.3× 227 1.4× 114 1.8k
Thomas F. Byrd United States 22 1.1k 1.0× 1.3k 1.3× 203 0.4× 411 1.3× 287 1.8× 38 2.0k
Jiazhen Chen China 24 1.3k 1.2× 993 1.0× 354 0.7× 623 2.0× 157 1.0× 80 1.8k
J. Kenneth McClatchy United States 26 1.0k 1.0× 1.2k 1.2× 226 0.5× 384 1.3× 227 1.4× 54 1.9k
Adong Shen China 24 872 0.8× 957 1.0× 520 1.0× 497 1.6× 154 0.9× 83 1.7k
Nicola Casali United Kingdom 19 1.4k 1.3× 1.2k 1.3× 462 0.9× 599 2.0× 99 0.6× 32 1.8k
Matthias Merker Germany 24 1.3k 1.2× 1.2k 1.2× 540 1.1× 435 1.4× 145 0.9× 80 1.9k

Countries citing papers authored by Lafras M. Steyn

Since Specialization
Citations

This map shows the geographic impact of Lafras M. Steyn'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 Lafras M. Steyn with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Lafras M. Steyn more than expected).

Fields of papers citing papers by Lafras M. Steyn

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Lafras M. Steyn. 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 Lafras M. Steyn. The network helps show where Lafras M. Steyn may publish in the future.

Co-authorship network of co-authors of Lafras M. Steyn

This figure shows the co-authorship network connecting the top 25 collaborators of Lafras M. Steyn. A scholar is included among the top collaborators of Lafras M. Steyn based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Lafras M. Steyn. Lafras M. Steyn is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Smith, Pete, Nasiema Allie, D. Mark Estes, et al.. (2009). Efficacy of Artemisia afra phytotherapy in experimental tuberculosis. Tuberculosis. 89. S33–S40. 35 indexed citations
2.
Govender, Dhirendra, et al.. (2008). Recent and Rapid Emergence of W‐Beijing Strains of Mycobacterium tuberculosis in Cape Town, South Africa. Clinical Infectious Diseases. 47(10). 1252–1259. 92 indexed citations
3.
Freeman, Sherry, Frank A. Post, Linda‐Gail Bekker, et al.. (2006). Mycobacterium tuberculosis H37Ra and H37Rv Differential Growth and Cytokine/Chemokine Induction in Murine Macrophages In Vitro. Journal of Interferon & Cytokine Research. 26(1). 27–33. 37 indexed citations
4.
Post, Frank A., Paul A. Willcox, Barun Mathema, et al.. (2004). Genetic Polymorphism inMycobacterium tuberculosisIsolates from Patients with Chronic Multidrug‐Resistant Tuberculosis. The Journal of Infectious Diseases. 190(1). 99–106. 61 indexed citations
5.
Kaplan, Gilla, Frank A. Post, André L. Moreira, et al.. (2003). Mycobacterium tuberculosis Growth at theCavity Surface: a Microenvironment with FailedImmunity. Infection and Immunity. 71(12). 7099–7108. 277 indexed citations
6.
7.
Steyn, Lafras M., et al.. (2001). The cold‐shock stress response in Mycobacterium smegmatis induces the expression of a histone‐like protein. Molecular Microbiology. 39(4). 994–1009. 40 indexed citations
8.
Bekker, Linda‐Gail, Patrick Haslett, Gary Maartens, Lafras M. Steyn, & Gilla Kaplan. (2000). Thalidomide‐Induced Antigen‐Specific Immune Stimulation in Patients with Human Immunodeficiency Virus Type 1 and Tuberculosis. The Journal of Infectious Diseases. 181(3). 954–965. 43 indexed citations
9.
Joubert, Lynette, Catriona McLean, Christopher M. Reid, et al.. (2000). Ischemic Heart Disease in Black South African Stroke Patients. Stroke. 31(6). 1294–1298. 22 indexed citations
10.
Mulder, Nicola, et al.. (1999). The Mycobacterium tuberculosis mysB gene product is a functional equivalent of the Escherichia coli sigma factor, KatF. Gene. 240(2). 361–370. 6 indexed citations
11.
Mulder, Nicola, Harold Zappe, & Lafras M. Steyn. (1999). Characterization of a Mycobacterium tuberculosis homologue of the Streptomyces coelicolor whiB gene. Tubercle and Lung Disease. 79(5). 299–308. 11 indexed citations
12.
Zappe, Harold, et al.. (1997). Mycobacterial promoters. Tubercle and Lung Disease. 78(5-6). 211–223. 56 indexed citations
13.
Vosloo, Wilna, et al.. (1997). Characterisation of a lipoprotein in Mycobacterium bovis (BCG) with sequence similarity to the secreted protein MPB70. Gene. 188(1). 123–128. 26 indexed citations
14.
Barlow, Denise P., et al.. (1995). 16S rRNA sequence analysis of an isolate of Mycobacterium haemophilum from a heart transplant patient. Journal of Medical Microbiology. 43(3). 189–191. 14 indexed citations
15.
Allan, Bruce, Heidi Smuts, & Lafras M. Steyn. (1994). Modified reaction tubes for the sequential addition of reagents in PCR assays. Nucleic Acids Research. 22(1). 109–110. 1 indexed citations
16.
17.
Wit, D. de, Gary Maartens, & Lafras M. Steyn. (1992). A comparative study of the polymerase chain reaction and conventional procedures for the diagnosis of tuberculous pleural effusion. Tubercle and Lung Disease. 73(5). 262–267. 74 indexed citations
18.
Nair, S.K. & Lafras M. Steyn. (1991). Cloning and expression in Escherichia coli of a recA homologue from Mycobacterium tuberculosis. Journal of General Microbiology. 137(10). 2409–2414. 4 indexed citations
19.
Elisha, B. Gay & Lafras M. Steyn. (1991). Identification of an Acinetobacter baumannii gene region with sequence and organizational similarity to Tn2670. Plasmid. 25(2). 96–104. 9 indexed citations
20.
Steyn, Lafras M. & Eric H. Harley. (1985). Intracellular activity of HPRTCape Town: Purine uptake and growth of cultured cells in selective media. Journal of Inherited Metabolic Disease. 8(4). 198–203. 4 indexed citations

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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