L. A. Johnson

2.8k total citations · 1 hit paper
42 papers, 2.3k citations indexed

About

L. A. Johnson is a scholar working on Reproductive Medicine, Genetics and Public Health, Environmental and Occupational Health. According to data from OpenAlex, L. A. Johnson has authored 42 papers receiving a total of 2.3k indexed citations (citations by other indexed papers that have themselves been cited), including 29 papers in Reproductive Medicine, 22 papers in Genetics and 19 papers in Public Health, Environmental and Occupational Health. Recurrent topics in L. A. Johnson's work include Sperm and Testicular Function (29 papers), Reproductive Biology and Fertility (19 papers) and Animal Genetics and Reproduction (14 papers). L. A. Johnson is often cited by papers focused on Sperm and Testicular Function (29 papers), Reproductive Biology and Fertility (19 papers) and Animal Genetics and Reproduction (14 papers). L. A. Johnson collaborates with scholars based in United States, Germany and Russia. L. A. Johnson's co-authors include V. G. Pursel, L. L. Schulman, G. Rickey Welch, George B. Rampacek, D. Rath, Daniel Pinkel, J.R. Dobrinsky, R. J. Gerrits, H. D. Guthrie and Bret Cooper and has published in prestigious journals such as Biology of Reproduction, Journal of Animal Science and Reproduction.

In The Last Decade

L. A. Johnson

41 papers receiving 2.1k citations

Hit Papers

Freezing of Boar Spermato... 1975 2026 1992 2009 1975 100 200 300 400
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. Freezing of Boar Spermatozoa: Fertilizing Capacity with Concentrated Semen and a New Thawing Procedure
    1975 449 citations V. G. Pursel, L. A. Johnson Journal of Animal Science profile →

Author Peers

Peers are selected by citation overlap in the author's most active subfields. citations · hero ref

Author Last Decade Papers Cites
L. A. Johnson 1.7k 1.5k 755 349 331 42 2.3k
M.M. Buhr 1.7k 1.0× 1.3k 0.9× 738 1.0× 688 2.0× 423 1.3× 78 2.7k
J. Gadea 2.3k 1.4× 2.1k 1.4× 640 0.8× 415 1.2× 481 1.5× 105 3.0k
Gene Oliphant 1.6k 1.0× 1.6k 1.0× 370 0.5× 255 0.7× 399 1.2× 36 2.1k
Carmen Matás 1.7k 1.0× 1.6k 1.1× 437 0.6× 307 0.9× 335 1.0× 71 2.2k
R. G. Saacke 1.9k 1.1× 1.7k 1.1× 1.1k 1.4× 1.1k 3.0× 186 0.6× 69 2.9k
M.A. Gil 2.1k 1.2× 2.5k 1.6× 811 1.1× 571 1.6× 693 2.1× 131 3.2k
R. Vishwanath 1.1k 0.7× 1.0k 0.7× 585 0.8× 547 1.6× 90 0.3× 40 1.7k
Cristina Cuello 1.6k 0.9× 2.1k 1.4× 649 0.9× 468 1.3× 693 2.1× 118 2.6k
Mayra Elena Ortiz D’Ávila Assumpção 1.0k 0.6× 1.0k 0.7× 346 0.5× 250 0.7× 327 1.0× 115 1.6k
M. Anzar 1.3k 0.8× 1.2k 0.8× 360 0.5× 282 0.8× 242 0.7× 62 1.7k

Countries citing papers authored by L. A. Johnson

Since Specialization
Citations

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

Fields of papers citing papers by L. A. Johnson

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by L. A. Johnson. 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 L. A. Johnson. The network helps show where L. A. Johnson may publish in the future.

Co-authorship network of co-authors of L. A. Johnson

This figure shows the co-authorship network connecting the top 25 collaborators of L. A. Johnson. A scholar is included among the top collaborators of L. A. Johnson 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 L. A. Johnson. L. A. Johnson 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.
Auer, Herbert, et al.. (2014). The effects of frozen tissue storage conditions on the integrity of RNA and protein. Biotechnic & Histochemistry. 89(7). 518–528. 33 indexed citations
2.
Johnson, L. A.. (2014). Prescience. 38(1). 106–106. 1 indexed citations
3.
Rath, D. & L. A. Johnson. (2008). Application and Commercialization of Flow Cytometrically Sex‐Sorted Semen. Reproduction in Domestic Animals. 43(s2). 338–346. 75 indexed citations
4.
Rens, W., Fengtang Yang, G. Rickey Welch, et al.. (2001). An X-Y paint set and sperm FISH protocol that can be used for validation of cattle sperm separation procedures. Reproduction. 121(4). 541–546. 41 indexed citations
5.
Long, Charles R., et al.. (1999). In vitro production of sexed embryos for gender preselection: high-speed sorting of X-chromosome-bearing sperm to produce pigs after embryo transfer.. Journal of Animal Science. 77(12). 3346–3346. 130 indexed citations
6.
7.
Rath, D., L. A. Johnson, J.R. Dobrinsky, G. Rickey Welch, & H. Niemann. (1997). Production of piglets preselected for sex following in vitro fertilization with X and Y chromosome-bearing spermatozoa sorted by flow cytometry. Theriogenology. 47(4). 795–800. 77 indexed citations
8.
Garner, Duane L., et al.. (1996). Comparison of seminal quality in Holstein bulls as yearlings and as mature sires. Theriogenology. 45(5). 923–934. 13 indexed citations
9.
Johnson, L. A., et al.. (1996). Birth of piglets following in vitro fertilization using sperm flow cytometrically sorted for gender. Theriogenology. 45(1). 256–256. 12 indexed citations
10.
Johnson, L. A.. (1995). Sex preselection by flow cytometric separation of X and Y chromosome-bearing sperm based on DNA difference: a review. Reproduction Fertility and Development. 7(4). 893–903. 86 indexed citations
11.
Cran, D. G., L. A. Johnson, & Cécile Polge. (1995). Sex preselection in cattle: a field trial. Veterinary Record. 136(19). 495–496. 63 indexed citations
12.
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14.
Garner, Duane L., L. A. Johnson, & Charles Allen. (1988). Fluorometric evaluation of cryopreserved bovine spermatozoa extended in egg yolk and milk. Theriogenology. 30(2). 369–378. 25 indexed citations
15.
Johnson, L. A., et al.. (1987). Flow cytometry of X and Y chromosome‐bearing sperm for DNA using an improved preparation method and staining with Hoechst 33342. Gamete Research. 17(3). 203–212. 103 indexed citations
16.
Johnson, L. A. & Daniel Pinkel. (1986). Modification of a laser‐based flow cytometer for high‐resolution DNA analysis of mammalian spermatozoa. Cytometry. 7(3). 268–273. 117 indexed citations
17.
Johnson, L. A., T.J. SEXTON, & V. G. Pursel. (1976). Effect of glycerol on spermatozoa trypsin-like enzyme activity and fertility in the chicken. Theriogenology. 5(1). 21–27. 3 indexed citations
18.
Pursel, V. G. & L. A. Johnson. (1976). Frozen Boar Spermatozoa: Methods of Thawing Pellets. Journal of Animal Science. 42(4). 927–931. 50 indexed citations
19.
Pursel, V. G., L. A. Johnson, & Alexej B. Bořkovec. (1975). EFFECTS OF IN-VITRO TREATMENT OF BOAR SPERMATOZOA WITH TEPA ON THE FERTILIZATION AND DEVELOPMENT OF PIG EGGS. Reproduction. 45(3). 549–552. 10 indexed citations
20.
Johnson, L. A., R. J. Gerrits, & E. P. Young. (1969). QUANTITATIVE ANALYSIS OF PORCINE SPERMATOZOA AND SEMINAL PLASMA PHOSPHOLIPIDS AS AFFECTED BY FREQUENCY OF EJACULATION. Reproduction. 19(1). 95–102. 28 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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