World's Best Scientists 2026 revealed!
Kazuhiko Ohashi

Kazuhiko Ohashi

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Animal Science and Veterinary
Japan
2026

D-Index & Metrics

Discipline name D-Index World Ranking Current World Ranking National Ranking Current National Ranking Publications Citations
Animal Science and Veterinary 46 776 716 9 8 286 8053

Kazuhiko Ohashi publications per year

The chart shows the history of publications by Kazuhiko Ohashi between 1984 and 2025, highlighting the no. of papers published in each year and offering an overview of the publication velocity of this scholar. Kazuhiko Ohashi published across 42 years, from 1984 to 2025, averaging 8 papers a year. Output peaked at 20 publications in 2005. 24 of the 334 publications appeared in the last two years.

No. of publications
5 10 15 20
Bar chart. Horizontal axis: year, 1984 to 2025. Vertical axis: number of publications, 0 to 20. Peak 20 publications in 2005. 1984: 1 publication 1985: 1 publication 1986: 1 publication 1987: 1 publication 1988: 0 publications 1989: 0 publications 1990: 0 publications 1991: 2 publications 1992: 0 publications 1993: 2 publications 1994: 2 publications 1995: 4 publications 1996: 6 publications 1997: 3 publications 1998: 7 publications 1999: 11 publications 2000: 8 publications 2001: 11 publications 2002: 12 publications 2003: 14 publications 2004: 11 publications 2005: 20 publications 2006: 11 publications 2007: 7 publications 2008: 10 publications 2009: 19 publications 2010: 2 publications 2011: 7 publications 2012: 9 publications 2013: 14 publications 2014: 8 publications 2015: 7 publications 2016: 8 publications 2017: 16 publications 2018: 7 publications 2019: 8 publications 2020: 15 publications 2021: 20 publications 2022: 10 publications 2023: 15 publications 2024: 5 publications 2025: 19 publications
1984 2025

334 publications in total across all disciplines

View publications per year as a table
Kazuhiko Ohashi: publications per year, 1984 to 2025
Year Publications
1984 1
1985 1
1986 1
1987 1
1988 0
1989 0
1990 0
1991 2
1992 0
1993 2
1994 2
1995 4
1996 6
1997 3
1998 7
1999 11
2000 8
2001 11
2002 12
2003 14
2004 11
2005 20
2006 11
2007 7
2008 10
2009 19
2010 2
2011 7
2012 9
2013 14
2014 8
2015 7
2016 8
2017 16
2018 7
2019 8
2020 15
2021 20
2022 10
2023 15
2024 5
2025 19
Total 334
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Kazuhiko Ohashi publication distribution in Animal Science and Veterinary in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Animal Science and Veterinary in 2026. The highlighted bar marks where Kazuhiko Ohashi sits on this spectrum.

No. of scientists
25 50 75 100
Bar chart with 84 bars. Horizontal axis: publications, 29–33 to 442+. Vertical axis: number of scientists, 0 to 109. Most scientists, 109, have 119–123 publications. The last bar groups every scientist with 442 publications or more. The highlighted bar, 284–288 publications, is where this scientist sits. 29–33 publications: 1 scientist 34–38 publications: 6 scientists 39–43 publications: 17 scientists 44–48 publications: 23 scientists 49–53 publications: 28 scientists 54–58 publications: 44 scientists 59–63 publications: 66 scientists 64–68 publications: 75 scientists 69–73 publications: 71 scientists 74–78 publications: 85 scientists 79–83 publications: 108 scientists 84–88 publications: 105 scientists 89–93 publications: 84 scientists 94–98 publications: 103 scientists 99–103 publications: 97 scientists 104–108 publications: 95 scientists 109–113 publications: 89 scientists 114–118 publications: 88 scientists 119–123 publications: 109 scientists 124–128 publications: 93 scientists 129–133 publications: 89 scientists 134–138 publications: 95 scientists 139–143 publications: 92 scientists 144–148 publications: 80 scientists 149–153 publications: 75 scientists 154–158 publications: 74 scientists 159–163 publications: 67 scientists 164–168 publications: 53 scientists 169–173 publications: 62 scientists 174–178 publications: 63 scientists 179–183 publications: 50 scientists 184–188 publications: 55 scientists 189–193 publications: 50 scientists 194–198 publications: 27 scientists 199–203 publications: 44 scientists 204–208 publications: 31 scientists 209–213 publications: 28 scientists 214–218 publications: 38 scientists 219–223 publications: 33 scientists 224–228 publications: 36 scientists 229–233 publications: 29 scientists 234–238 publications: 35 scientists 239–243 publications: 23 scientists 244–248 publications: 24 scientists 249–253 publications: 29 scientists 254–258 publications: 28 scientists 259–263 publications: 21 scientists 264–268 publications: 25 scientists 269–273 publications: 11 scientists 274–278 publications: 18 scientists 279–283 publications: 13 scientists 284–288 publications: 18 scientists 289–293 publications: 10 scientists 294–298 publications: 12 scientists 299–303 publications: 11 scientists 304–308 publications: 15 scientists 309–313 publications: 14 scientists 314–318 publications: 14 scientists 319–323 publications: 8 scientists 324–328 publications: 8 scientists 329–333 publications: 13 scientists 334–338 publications: 14 scientists 339–343 publications: 13 scientists 344–348 publications: 10 scientists 349–353 publications: 11 scientists 354–358 publications: 5 scientists 359–363 publications: 8 scientists 364–368 publications: 8 scientists 369–373 publications: 6 scientists 374–378 publications: 7 scientists 379–383 publications: 8 scientists 384–388 publications: 3 scientists 389–393 publications: 4 scientists 394–398 publications: 5 scientists 399–403 publications: 8 scientists 404–408 publications: 5 scientists 409–413 publications: 4 scientists 414–418 publications: 3 scientists 419–423 publications: 8 scientists 424–428 publications: 5 scientists 429–433 publications: 3 scientists 434–438 publications: 5 scientists 439–441 publications: 5 scientists 442+ publications: 99 scientists
29–33 publications 442+

This scientist: 286 publications — 89th percentile

89% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 442 publications or more.

View publications distribution as a table
Number of Animal Science and Veterinary scientists by publication count, Research.com 2026 ranking edition. Based on 3,155 ranked scientists.
Publications Scientists This scientist
29–33 1
34–38 6
39–43 17
44–48 23
49–53 28
54–58 44
59–63 66
64–68 75
69–73 71
74–78 85
79–83 108
84–88 105
89–93 84
94–98 103
99–103 97
104–108 95
109–113 89
114–118 88
119–123 109
124–128 93
129–133 89
134–138 95
139–143 92
144–148 80
149–153 75
154–158 74
159–163 67
164–168 53
169–173 62
174–178 63
179–183 50
184–188 55
189–193 50
194–198 27
199–203 44
204–208 31
209–213 28
214–218 38
219–223 33
224–228 36
229–233 29
234–238 35
239–243 23
244–248 24
249–253 29
254–258 28
259–263 21
264–268 25
269–273 11
274–278 18
279–283 13
284–288 18 286
289–293 10
294–298 12
299–303 11
304–308 15
309–313 14
314–318 14
319–323 8
324–328 8
329–333 13
334–338 14
339–343 13
344–348 10
349–353 11
354–358 5
359–363 8
364–368 8
369–373 6
374–378 7
379–383 8
384–388 3
389–393 4
394–398 5
399–403 8
404–408 5
409–413 4
414–418 3
419–423 8
424–428 5
429–433 3
434–438 5
439–441 5
442+ 99
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Kazuhiko Ohashi D-index placement in Animal Science and Veterinary in 2026

The chart shows the D-index (discipline H-index) distribution of Animal Science and Veterinary scientists ranked by Research.com in 2026. The highlighted bar marks where Kazuhiko Ohashi sits on this spectrum.

No. of scientists
50 100 150
Bar chart with 58 bars. Horizontal axis: D-Index, 20 to 77+. Vertical axis: number of scientists, 0 to 158. Most scientists, 158, have 31 D-Index. The last bar groups every scientist with 77 D-Index or more. The highlighted bar, 46 D-Index, is where this scientist sits. 20 D-Index: 5 scientists 21 D-Index: 22 scientists 22 D-Index: 31 scientists 23 D-Index: 44 scientists 24 D-Index: 53 scientists 25 D-Index: 66 scientists 26 D-Index: 80 scientists 27 D-Index: 101 scientists 28 D-Index: 106 scientists 29 D-Index: 116 scientists 30 D-Index: 154 scientists 31 D-Index: 158 scientists 32 D-Index: 143 scientists 33 D-Index: 137 scientists 34 D-Index: 126 scientists 35 D-Index: 134 scientists 36 D-Index: 112 scientists 37 D-Index: 115 scientists 38 D-Index: 105 scientists 39 D-Index: 111 scientists 40 D-Index: 107 scientists 41 D-Index: 87 scientists 42 D-Index: 74 scientists 43 D-Index: 62 scientists 44 D-Index: 61 scientists 45 D-Index: 41 scientists 46 D-Index: 51 scientists 47 D-Index: 43 scientists 48 D-Index: 28 scientists 49 D-Index: 47 scientists 50 D-Index: 40 scientists 51 D-Index: 34 scientists 52 D-Index: 33 scientists 53 D-Index: 43 scientists 54 D-Index: 16 scientists 55 D-Index: 32 scientists 56 D-Index: 21 scientists 57 D-Index: 18 scientists 58 D-Index: 28 scientists 59 D-Index: 33 scientists 60 D-Index: 17 scientists 61 D-Index: 21 scientists 62 D-Index: 18 scientists 63 D-Index: 21 scientists 64 D-Index: 9 scientists 65 D-Index: 20 scientists 66 D-Index: 11 scientists 67 D-Index: 16 scientists 68 D-Index: 12 scientists 69 D-Index: 17 scientists 70 D-Index: 13 scientists 71 D-Index: 15 scientists 72 D-Index: 11 scientists 73 D-Index: 11 scientists 74 D-Index: 14 scientists 75 D-Index: 5 scientists 76 D-Index: 6 scientists 77+ D-Index: 100 scientists
20 D-Index 77+

This scientist: 46 D-Index — 76th percentile

76% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 77 D-Index or more.

View D-Index distribution as a table
Number of Animal Science and Veterinary scientists by D-index, Research.com 2026 ranking edition. Based on 3,155 ranked scientists.
D-Index Scientists This scientist
20 5
21 22
22 31
23 44
24 53
25 66
26 80
27 101
28 106
29 116
30 154
31 158
32 143
33 137
34 126
35 134
36 112
37 115
38 105
39 111
40 107
41 87
42 74
43 62
44 61
45 41
46 51 46
47 43
48 28
49 47
50 40
51 34
52 33
53 43
54 16
55 32
56 21
57 18
58 28
59 33
60 17
61 21
62 18
63 21
64 9
65 20
66 11
67 16
68 12
69 17
70 13
71 15
72 11
73 11
74 14
75 5
76 6
77+ 100
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Research.com Recognitions

  • 2026 - Research.com Animal Science and Veterinary in Japan Leader Award
  • 2025 - Research.com Animal Science and Veterinary in Japan Leader Award

Overview

Kazuhiko Ohashi is affiliated with Hokkaido University in Japan and has contributed extensively to research in the fields of medicine and immunology and microbiology. Their work spans several important subfields, including immunology, epidemiology, parasitology, oncology, and ecology, evolution, behavior, and systematics.

The scientist's research topics reflect a focus on infectious diseases and immune system responses. Key areas of study include vector-borne infectious diseases, cancer immunotherapy and biomarkers, immunotherapy and immune responses, immune cell function and interaction, herpesvirus infections and treatments, T-cell and retrovirus studies, and bird parasitology and diseases.

Ohashi's collaboration network highlights frequent coauthors such as Satoru Konnai, Tomohiro Okagawa, Naoya Maekawa, M. Shiro, and Yasuhiko Suzuki, indicating extensive joint research efforts.

They have published multiple papers in a variety of scientific journals, including:

  • PD-L1 immunohistochemistry for canine cancers and clinical benefit of anti-PD-L1 antibody in dogs with pulmonary metastatic oral malignant melanoma, 2021, npj Precision Oncology
  • Upregulation of PD-L1 Expression by Prostaglandin E2 and the Enhancement of IFN-γ by Anti-PD-L1 Antibody Combined With a COX-2 Inhibitor in Mycoplasma bovis Infection, 2020, Frontiers in Veterinary Science
  • Direct evidence of the preventive effect of milk replacer-based probiotic feeding in calves against severe diarrhea, 2021, Veterinary Microbiology
  • Enhanced Immunotherapeutic Efficacy of Anti-PD-L1 Antibody in Combination with an EP4 Antagonist, 2020, ImmunoHorizons
  • Rhipicephalus microplus cystatin as a potential cross-protective tick vaccine against Rhipicephalus appendiculatus, 2020, Ticks and Tick-borne Diseases

Frequent publication venues for Ohashi's work include:

  • Journal of Veterinary Medical Science
  • Frontiers in Veterinary Science
  • PLoS ONE
  • Vaccines
  • Proceedings on CD-ROM - International Society for Magnetic Resonance in Medicine. Scientific Meeting and Exhibition/Proceedings of the International Society for Magnetic Resonance in Medicine, Scientific Meeting and Exhibition

Best Publications

  • A serine protease inhibitor (serpin) from Haemaphysalis longicornis as an anti-tick vaccine.

    Saiki Imamura;Itabajara da Silva Vaz Junior;Maiko Sugino;Kazuhiko Ohashi

  • c-Ki-ras point mutations in ductectatic-type mucinous cystic neoplasms of the pancreas

    A Yanagisawa;Y Kato;K Ohtake;T Kitagawa

  • A hypervariable region in VP1 of chicken infectious anemia virus mediates rate of spread and cell tropism in tissue culture.

    R W Renshaw;C Soiné;T Weinkle;P H O'Connell

  • Loop-Mediated Isothermal Amplification for Rapid Detection of Newcastle Disease Virus

    Hang Minh Pham;Chie Nakajima;Kazuhiko Ohashi;Misao Onuma

  • A canine chimeric monoclonal antibody targeting PD-L1 and its clinical efficacy in canine oral malignant melanoma or undifferentiated sarcoma.

    Naoya Maekawa;Satoru Konnai;Satoshi Takagi;Yumiko Kagawa

  • Molecular Characterization of a Haemaphysalis longicornis Tick Salivary Gland-Associated 29-Kilodalton Protein and Its Effect as a Vaccine against Tick Infestation in Rabbits

    Albert Mulenga;Chihiro Sugimoto;Yasuhito Sako;Kazuhiko Ohashi

  • The rapid quantitative analysis of bovine cytokine genes by real-time RT-PCR.

    Satoru Konnai;Tatsufumi Usui;Kazuhiko Ohashi;Misao Onuma

  • Immunohistochemical Analysis of PD-L1 Expression in Canine Malignant Cancers and PD-1 Expression on Lymphocytes in Canine Oral Melanoma

    Naoya Maekawa;Satoru Konnai;Tomohiro Okagawa;Asami Nishimori

  • Expression of PD-L1 on Canine Tumor Cells and Enhancement of IFN-γ Production from Tumor-Infiltrating Cells by PD-L1 Blockade

    Naoya Maekawa;Satoru Konnai;Ryoyo Ikebuchi;Tomohiro Okagawa

  • Host immune responses in the course of bovine leukemia virus infection.

    Hidenori Kabeya;Kazuhiko Ohashi;Misao Onuma

  • Vertical transmission of bovine leukemia virus and bovine immunodeficiency virus in dairy cattle herds.

    Sothy Meas;Tatsufumi Usui;Kazuhiko Ohashi;Chihiro Sugimoto

  • The quest for a universal vaccine against ticks: cross-immunity insights.

    Luís F. Parizi;Naftaly W. Githaka;Carlos Logullo;Satoru Konnai

  • A serine proteinase inhibitor (serpin) from ixodid tick Haemaphysalis longicornis; cloning and preliminary assessment of its suitability as a candidate for a tick vaccine.

    Maiko Sugino;Saiki Imamura;Albert Mulenga;Mie Nakajima

  • Tick surveillance for relapsing fever spirochete Borrelia miyamotoi in Hokkaido, Japan.

    Ai Takano;Kochi Toyomane;Satoru Konnai;Kazuhiko Ohashi

  • PD-L1 immunohistochemistry for canine cancers and clinical benefit of anti-PD-L1 antibody in dogs with pulmonary metastatic oral malignant melanoma

    Naoya Maekawa;Satoru Konnai;Maki Nishimura;Yumiko Kagawa

  • Increase of cells expressing PD-L1 in bovine leukemia virus infection and enhancement of anti-viral immune responses in vitro via PD-L1 blockade

    Ryoyo Ikebuchi;Satoru Konnai;Tatsuya Shirai;Yuji Sunden

  • Two serine protease inhibitors (serpins) that induce a bovine protective immune response against Rhipicephalus appendiculatus ticks.

    Saiki Imamura;Boniface Namangala;Tomoko Tajima;Mwase Enala Tembo

  • Efficacy of peroral pancreatoscopy in the diagnosis of pancreatic diseases.

    Kenji Yamao;Kazuhiko Ohashi;Tsuneya Nakamura;Takashi Suzuki

  • Cross immunity with Haemaphysalis longicornis glutathione S-transferase reduces an experimental Rhipicephalus (Boophilus) microplus infestation.

    Luís Fernando Parizi;Kiyoko Uemura Utiumi;Saiki Imamura;Misao Onuma

  • Difference in the meq gene between oncogenic and attenuated strains of Marek's disease virus serotype 1.

    Sung-Il Lee;Michihiro Takagi;Kazuhiko Ohashi;Chihiro Sugimoto

  • Pathogenesis of Marek's disease (MD) and possible mechanisms of immunity induced by MD vaccine.

    Toshifumi Morimura;Kazuhiko Ohashi;Chihiro Sugimoto;Misao Onuma

  • Rapid detection and differentiation of Newcastle disease virus by real-time PCR with melting-curve analysis

    H. M. Pham;S. Konnai;T. Usui;K. S. Chang

  • IMMUNOMODULATION OF PERIPHERAL T CELLS IN CHICKENS INFECTED WITH MAREK'S DISEASE VIRUS : INVOLVEMENT IN IMMUNOSUPPRESSION

    Toshifumi Morimura;Masakazu Hattori;Kazuhiko Ohashi;Chihiro Sugimoto

  • Relationship of bovine viral diarrhea virus persistent infection to incidence of diseases on dairy farms based on bulk tank milk test by RT-PCR

    Takashi Kozasa;Motoshi Tajima;Ichiro Yasutomi;Kimihiro Sano

Frequent Co-Authors

Chihiro Sugimoto
Chihiro Sugimoto Hokkaido University
Naftaly Githaka
Naftaly Githaka International Livestock Research Institute
Yukinari Kato
Yukinari Kato Tohoku University
Takashi Suzuki
Takashi Suzuki Tohoku University
Karel A. Schat
Karel A. Schat Cornell University
Mika K. Kaneko
Mika K. Kaneko Tohoku University
Takeshi Mikami
Takeshi Mikami University of Tokyo
Toshihiko Iwanaga
Toshihiko Iwanaga Hokkaido University
Massaro W. Ueti
Massaro W. Ueti Washington State University

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Related Online Degrees & Career Pathways

For those interested in expanding their knowledge beyond traditional animal science and veterinary studies, a variety of related online degrees offer valuable career opportunities. Programs like online apa-accredited psyd programs provide advanced training in psychology, which can be instrumental for careers focusing on animal behavior or therapy involving human-animal interactions.

Additionally, the growing need for mental health professionals opens doors in counseling fields. An addiction counseling degree online equips graduates to support individuals overcoming substance abuse, a critical area that intersects with public health and community well-being.

Similarly, students pursuing emotional and social support roles might explore online marriage and family therapy graduate programs, which sharpen skills in managing family dynamics and interpersonal relationships—a valuable asset for those working in animal-assisted therapy or shelter environments.

For those aiming at the highest academic level, an online phd counselor education and supervision offers opportunities to lead and teach future counselors, further intersecting animal science with broader psychological and therapeutic disciplines.

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