World's Best Scientists 2026 revealed!

D-Index & Metrics

Medicine

D-Index
90
Citations
24628
World Ranking
12361
National Ranking
6328

Larry Johnson publication distribution in Medicine in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Medicine in 2026. The highlighted bar marks where Larry Johnson sits on this spectrum.

101–120 publications: 5 scientists 121–140 publications: 26 scientists 141–160 publications: 73 scientists 161–180 publications: 155 scientists 181–200 publications: 230 scientists 201–220 publications: 363 scientists 221–240 publications: 487 scientists 241–260 publications: 545 scientists 261–280 publications: 722 scientists 281–300 publications: 768 scientists 301–320 publications: 834 scientists 321–340 publications: 895 scientists 341–360 publications: 922 scientists 361–380 publications: 838 scientists 381–400 publications: 861 scientists 401–420 publications: 918 scientists 421–440 publications: 806 scientists 441–460 publications: 771 scientists 461–480 publications: 751 scientists 481–500 publications: 713 scientists 501–520 publications: 617 scientists 521–540 publications: 611 scientists 541–560 publications: 537 scientists 561–580 publications: 504 scientists 581–600 publications: 509 scientists 601–620 publications: 396 scientists 621–640 publications: 386 scientists 641–660 publications: 371 scientists 661–680 publications: 340 scientists 681–700 publications: 336 scientists 701–720 publications: 307 scientists 721–740 publications: 259 scientists 741–760 publications: 230 scientists 761–780 publications: 228 scientists 781–800 publications: 217 scientists 801–820 publications: 204 scientists 821–840 publications: 186 scientists 841–860 publications: 177 scientists 861–880 publications: 155 scientists 881–900 publications: 139 scientists 901–920 publications: 145 scientists 921–940 publications: 116 scientists 941–960 publications: 133 scientists 961–980 publications: 91 scientists 981–1,000 publications: 96 scientists 1,001–1,020 publications: 77 scientists 1,021–1,040 publications: 70 scientists 1,041–1,060 publications: 63 scientists 1,061–1,080 publications: 77 scientists 1,081–1,100 publications: 49 scientists 1,101–1,120 publications: 54 scientists 1,121–1,140 publications: 49 scientists 1,141–1,160 publications: 51 scientists 1,161–1,180 publications: 35 scientists 1,181–1,200 publications: 39 scientists 1,201–1,220 publications: 26 scientists 1,221–1,240 publications: 37 scientists 1,241–1,260 publications: 36 scientists 1,261–1,280 publications: 27 scientists 1,281–1,300 publications: 32 scientists 1,301–1,320 publications: 28 scientists 1,321–1,340 publications: 17 scientists 1,341–1,360 publications: 30 scientists 1,361–1,380 publications: 28 scientists 1,381–1,400 publications: 17 scientists 1,401–1,420 publications: 21 scientists 1,421–1,440 publications: 15 scientists 1,441–1,460 publications: 12 scientists 1,461–1,480 publications: 12 scientists 1,481–1,500 publications: 18 scientists 1,501–1,520 publications: 14 scientists 1,521–1,540 publications: 17 scientists 1,541–1,560 publications: 15 scientists 1,561–1,580 publications: 6 scientists 1,581–1,600 publications: 2 scientists 1,601–1,620 publications: 12 scientists 1,621–1,640 publications: 11 scientists 1,641–1,660 publications: 8 scientists 1,661–1,680 publications: 5 scientists 1,681–1,700 publications: 5 scientists 1,701–1,720 publications: 10 scientists 1,721–1,740 publications: 12 scientists 1,741–1,760 publications: 14 scientists 1,761–1,780 publications: 6 scientists 1,781–1,795 publications: 5 scientists 1,796+ publications: 100 scientists
101 publications 1,796+

This scientist: 297 publications — 16th percentile

16% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,796 publications or more.

Larry Johnson D-index placement in Medicine in 2026

The chart shows the D-index (discipline H-index) distribution of Medicine scientists ranked by Research.com in 2026. The highlighted bar marks where Larry Johnson sits on this spectrum.

70–71 D-Index: 226 scientists 72–73 D-Index: 391 scientists 74–75 D-Index: 574 scientists 76–77 D-Index: 730 scientists 78–79 D-Index: 891 scientists 80–81 D-Index: 972 scientists 82–83 D-Index: 1,027 scientists 84–85 D-Index: 1,003 scientists 86–87 D-Index: 960 scientists 88–89 D-Index: 970 scientists 90–91 D-Index: 922 scientists 92–93 D-Index: 839 scientists 94–95 D-Index: 808 scientists 96–97 D-Index: 779 scientists 98–99 D-Index: 668 scientists 100–101 D-Index: 611 scientists 102–103 D-Index: 630 scientists 104–105 D-Index: 513 scientists 106–107 D-Index: 541 scientists 108–109 D-Index: 445 scientists 110–111 D-Index: 429 scientists 112–113 D-Index: 400 scientists 114–115 D-Index: 393 scientists 116–117 D-Index: 318 scientists 118–119 D-Index: 302 scientists 120–121 D-Index: 287 scientists 122–123 D-Index: 255 scientists 124–125 D-Index: 256 scientists 126–127 D-Index: 252 scientists 128–129 D-Index: 230 scientists 130–131 D-Index: 179 scientists 132–133 D-Index: 168 scientists 134–135 D-Index: 163 scientists 136–137 D-Index: 159 scientists 138–139 D-Index: 134 scientists 140–141 D-Index: 134 scientists 142–143 D-Index: 118 scientists 144–145 D-Index: 109 scientists 146–147 D-Index: 106 scientists 148–149 D-Index: 74 scientists 150–151 D-Index: 79 scientists 152–153 D-Index: 80 scientists 154–155 D-Index: 87 scientists 156–157 D-Index: 57 scientists 158–159 D-Index: 74 scientists 160–161 D-Index: 69 scientists 162–163 D-Index: 60 scientists 164–165 D-Index: 53 scientists 166–167 D-Index: 39 scientists 168–169 D-Index: 42 scientists 170–171 D-Index: 32 scientists 172–173 D-Index: 39 scientists 174–175 D-Index: 40 scientists 176–177 D-Index: 28 scientists 178–179 D-Index: 19 scientists 180–181 D-Index: 23 scientists 182–183 D-Index: 31 scientists 184–185 D-Index: 18 scientists 186–187 D-Index: 20 scientists 188–189 D-Index: 22 scientists 190–191 D-Index: 13 scientists 192–193 D-Index: 21 scientists 194–195 D-Index: 12 scientists 196–197 D-Index: 12 scientists 198–199 D-Index: 14 scientists 200–201 D-Index: 15 scientists 202–203 D-Index: 13 scientists 204–205 D-Index: 10 scientists 206–207 D-Index: 8 scientists 208–209 D-Index: 4 scientists 210–211 D-Index: 12 scientists 212–213 D-Index: 11 scientists 214–215 D-Index: 10 scientists 216 D-Index: 4 scientists 217+ D-Index: 98 scientists
70 D-Index 217+

This scientist: 90 D-Index — 41st percentile

41% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 217 D-Index or more.

Overview

Larry Johnson is affiliated with the United States Department of Agriculture in the United States. Their research primarily focuses on the field of Medicine, with notable contributions in Infectious Diseases, Reproductive Medicine, Public Health, Environmental and Occupational Health, Immunology, and General Health Professions.

The scientist's work covers a range of topics, including:

  • SARS-CoV-2 and COVID-19 Research
  • COVID-19 Clinical Research Studies
  • Sperm and Testicular Function
  • Reproductive Biology and Fertility
  • Phagocytosis and Immune Regulation
  • Male Reproductive Health Studies
  • Long-Term Effects of COVID-19

Larry Johnson has published research articles in various scientific venues. These include:

  • The Journal of Immunology
  • Clinical Theriogenology
  • bioRxiv (Cold Spring Harbor Laboratory)

Among the recent papers authored or co-authored by Larry Johnson are:

  • "Cutting Edge: Characterization of Low Copy Number Human Angiotensin-Converting Enzyme 2-Transgenic Mice as an Improved Model of SARS-CoV-2 Infection" (2024, The Journal of Immunology)
  • "Artifactual disruption of sperm midpiece in extended stallion semen" (2020, Clinical Theriogenology)
  • "Characterization of low copy number human angiotensin-converting enzyme 2 (hACE2)-transgenic mice as an improved model of SARS-CoV-2 infection" (2023, bioRxiv (Cold Spring Harbor Laboratory))

The scientist collaborates frequently with several co-authors, including:

  • Christine M. Bradshaw
  • Teodora Georgieva
  • Trevor N. Tankersley
  • Tama Taylor-Doyle
  • Jennifer L. Uhrlaub

Best Publications

  • Viability assessment of mammalian sperm using SYBR-14 and propidium iodide.

    Duane L. Garner;Lawrence A. Johnson

  • Storage of boar semen.

    L.A Johnson;K.F Weitze;P Fiser;W.M.C Maxwell

  • Leydig Cell Numbers, Daily Sperm Production, and Serum Gonadotropin Levels in Aging Men

    W. B. Neaves;L. Johnson;J. C. Porter;C. R. Parker

  • Sex preselection in rabbits: live births from X and Y sperm separated by DNA and cell sorting.

    Lawrence A. Johnson;James P. Flook;Harold W. Hawk

  • Sex preselection: High-speed flow cytometric sorting of X and Y sperm for maximum efficiency

    L.A. Johnson;G.R. Welch

  • Physiology of spermatozoa at high dilution rates: the influence of seminal plasma.

    W.M.C. Maxwell;L.A. Johnson

  • Assessment of spermatozoal function using dual fluorescent staining and flow cytometric analyses.

    Duane L. Garner;Daniel Pinkel;Lawrence A. Johnson;Marvin M. Pace

  • Chlortetracycline analysis of boar spermatozoa after incubation, flow cytometric sorting, cooling, or cryopreservation.

    W.M.C. Maxwell;L.A. Johnson

  • Quantification of the human Sertoli cell population: its distribution, relation to germ cell numbers, and age-related decline.

    Larry Johnson;Randall S. Zane;Charles S. Petty;William B. Neaves

  • Sex Preselection in Swine: Altered Sex Ratios in Offspring following Surgical Insemination of Flow Sorted X‐ and Y‐Bearing Sperm

    L.A. Johnson

  • Quantification of the X- and Y-chromosome-bearing spermatozoa of domestic animals by flow cytometry.

    D L Garner;B L Gledhill;D Pinkel;S Lake

  • Acrosome morphology of boar spermatozoa incubated before cold shock.

    V. G. Pursel;L. A. Johnson;G. B. Rampacek

  • Daily spermatozoal production, epididymal spermatozoal reserves and transit time of spermatozoa through the epididymis of the rhesus monkey.

    R. P. Amann;L. Johnson;D. L. Thompson;B. W. Pickett

  • Modification of a laser‐based flow cytometer for high‐resolution DNA analysis of mammalian spermatozoa

    L. A. Johnson;L. A. Johnson;D. Pinkel

  • Viability and membrane integrity of spermatozoa after dilution and flow cytometric sorting in the presence or absence of seminal plasma.

    W. M. C. Maxwell;G. R. Welch;L. A. Johnson

  • Age-Related Changes in the Leydig Cell Population, Seminiferous Tubules, and Sperm Production in Stallions

    Larry Johnson;William B. Neaves

  • BIRTH OF PIGLETS AFTER TRANSFER OF EMBRYOS CRYOPRESERVED BY CYTOSKELETAL STABILIZATION AND VITRIFICATION

    J.R. Dobrinsky;V.G. Pursel;C.R. Long;L.A. Johnson

  • Production of bovine calves following separation of X- and Y-chromosome bearing sperm and in vitro fertilisation.

    D G Cran;L A Johnson;N G Miller;D Cochrane

  • Role of Sertoli cell number and function on regulation of spermatogenesis.

    Larry Johnson;Donald L. Thompson;Dickson D. Varner

  • Gender Preselection in Humans? Flow Cytometric Separation of X and Y Spermatozoa for the Prevention of X-Linked Diseases

    Lawrence A. Johnson;Glenn R. Welch;Keyvan Keyvanfar;Andrew Dorfmann

Frequent Co-Authors

Thomas H. Welsh
Thomas H. Welsh Texas A&M University
Daniel Pinkel
Daniel Pinkel University of California, San Francisco
Robert Clarke
Robert Clarke University of Oxford
Mary D. Sammel
Mary D. Sammel University of Colorado Anschutz Medical Campus
Jean D. Wilson
Jean D. Wilson The University of Texas Southwestern Medical Center
Stephen Safe
Stephen Safe Texas A&M University
Joan K. Lunney
Joan K. Lunney Agricultural Research Service
George E. Seidel
George E. Seidel Colorado State University
Susan M. Domchek
Susan M. Domchek University of Pennsylvania
Andrzej Bartke
Andrzej Bartke Southern Illinois University School of Medicine

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