World's Best Scientists 2026 revealed!
Norman A. Ratcliffe

Norman A. Ratcliffe

D-Index & Metrics

Biology and Biochemistry

D-Index
69
Citations
12855
World Ranking
7579
National Ranking
588

Norman A. Ratcliffe publication distribution in Biology and Biochemistry in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Biology and Biochemistry in 2026. The highlighted bar marks where Norman A. Ratcliffe sits on this spectrum.

47–56 publications: 8 scientists 57–66 publications: 35 scientists 67–76 publications: 106 scientists 77–86 publications: 231 scientists 87–96 publications: 414 scientists 97–106 publications: 546 scientists 107–116 publications: 704 scientists 117–126 publications: 849 scientists 127–136 publications: 980 scientists 137–146 publications: 942 scientists 147–156 publications: 969 scientists 157–166 publications: 950 scientists 167–176 publications: 951 scientists 177–186 publications: 915 scientists 187–196 publications: 787 scientists 197–206 publications: 841 scientists 207–216 publications: 735 scientists 217–226 publications: 709 scientists 227–236 publications: 651 scientists 237–246 publications: 605 scientists 247–256 publications: 510 scientists 257–266 publications: 524 scientists 267–276 publications: 434 scientists 277–286 publications: 418 scientists 287–296 publications: 350 scientists 297–306 publications: 363 scientists 307–316 publications: 315 scientists 317–326 publications: 296 scientists 327–336 publications: 261 scientists 337–346 publications: 240 scientists 347–356 publications: 219 scientists 357–366 publications: 197 scientists 367–376 publications: 154 scientists 377–386 publications: 161 scientists 387–396 publications: 155 scientists 397–406 publications: 145 scientists 407–416 publications: 124 scientists 417–426 publications: 112 scientists 427–436 publications: 132 scientists 437–446 publications: 116 scientists 447–456 publications: 99 scientists 457–466 publications: 81 scientists 467–476 publications: 91 scientists 477–486 publications: 80 scientists 487–496 publications: 80 scientists 497–506 publications: 60 scientists 507–516 publications: 36 scientists 517–526 publications: 46 scientists 527–536 publications: 54 scientists 537–546 publications: 44 scientists 547–556 publications: 43 scientists 557–566 publications: 43 scientists 567–576 publications: 42 scientists 577–586 publications: 25 scientists 587–596 publications: 34 scientists 597–606 publications: 23 scientists 607–616 publications: 33 scientists 617–626 publications: 31 scientists 627–636 publications: 27 scientists 637–646 publications: 25 scientists 647–656 publications: 28 scientists 657–666 publications: 34 scientists 667–676 publications: 18 scientists 677–686 publications: 16 scientists 687–696 publications: 10 scientists 697–706 publications: 12 scientists 707–716 publications: 21 scientists 717–726 publications: 12 scientists 727–736 publications: 12 scientists 737–746 publications: 10 scientists 747–756 publications: 7 scientists 757–766 publications: 13 scientists 767–776 publications: 15 scientists 777–786 publications: 13 scientists 787–796 publications: 9 scientists 797–806 publications: 9 scientists 807–816 publications: 7 scientists 817–826 publications: 4 scientists 827–836 publications: 9 scientists 837–846 publications: 7 scientists 847–856 publications: 3 scientists 857–866 publications: 5 scientists 867–876 publications: 5 scientists 877–886 publications: 11 scientists 887–896 publications: 3 scientists 897–906 publications: 4 scientists 907–916 publications: 7 scientists 917–926 publications: 5 scientists 927–936 publications: 6 scientists 937–946 publications: 6 scientists 947–956 publications: 3 scientists 957–966 publications: 7 scientists 967–976 publications: 2 scientists 977–986 publications: 2 scientists 987–996 publications: 1 scientists 997–1,006 publications: 5 scientists 1,007–1,016 publications: 2 scientists 1,017–1,026 publications: 2 scientists 1,027 publications: 1 scientists 1,028+ publications: 100 scientists
47 publications 1,028+

This scientist: 191 publications — 46th percentile

46% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 1,028 publications or more.

Norman A. Ratcliffe D-index placement in Biology and Biochemistry in 2026

The chart shows the D-index (discipline H-index) distribution of Biology and Biochemistry scientists ranked by Research.com in 2026. The highlighted bar marks where Norman A. Ratcliffe sits on this spectrum.

40–41 D-Index: 80 scientists 42–43 D-Index: 183 scientists 44–45 D-Index: 317 scientists 46–47 D-Index: 504 scientists 48–49 D-Index: 718 scientists 50–51 D-Index: 900 scientists 52–53 D-Index: 1,026 scientists 54–55 D-Index: 1,150 scientists 56–57 D-Index: 1,236 scientists 58–59 D-Index: 1,253 scientists 60–61 D-Index: 1,163 scientists 62–63 D-Index: 1,131 scientists 64–65 D-Index: 1,032 scientists 66–67 D-Index: 897 scientists 68–69 D-Index: 814 scientists 70–71 D-Index: 715 scientists 72–73 D-Index: 709 scientists 74–75 D-Index: 596 scientists 76–77 D-Index: 512 scientists 78–79 D-Index: 473 scientists 80–81 D-Index: 412 scientists 82–83 D-Index: 373 scientists 84–85 D-Index: 358 scientists 86–87 D-Index: 285 scientists 88–89 D-Index: 273 scientists 90–91 D-Index: 227 scientists 92–93 D-Index: 208 scientists 94–95 D-Index: 193 scientists 96–97 D-Index: 153 scientists 98–99 D-Index: 157 scientists 100–101 D-Index: 148 scientists 102–103 D-Index: 120 scientists 104–105 D-Index: 113 scientists 106–107 D-Index: 100 scientists 108–109 D-Index: 86 scientists 110–111 D-Index: 67 scientists 112–113 D-Index: 72 scientists 114–115 D-Index: 73 scientists 116–117 D-Index: 64 scientists 118–119 D-Index: 53 scientists 120–121 D-Index: 60 scientists 122–123 D-Index: 54 scientists 124–125 D-Index: 43 scientists 126–127 D-Index: 38 scientists 128–129 D-Index: 49 scientists 130–131 D-Index: 26 scientists 132–133 D-Index: 18 scientists 134–135 D-Index: 23 scientists 136–137 D-Index: 32 scientists 138–139 D-Index: 32 scientists 140–141 D-Index: 27 scientists 142–143 D-Index: 19 scientists 144–145 D-Index: 22 scientists 146–147 D-Index: 12 scientists 148–149 D-Index: 16 scientists 150–151 D-Index: 14 scientists 152–153 D-Index: 10 scientists 154–155 D-Index: 13 scientists 156–157 D-Index: 10 scientists 158–159 D-Index: 7 scientists 160–161 D-Index: 9 scientists 162–163 D-Index: 13 scientists 164–165 D-Index: 4 scientists 166 D-Index: 4 scientists 167+ D-Index: 98 scientists
40 D-Index 167+

This scientist: 69 D-Index — 63rd percentile

63% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 167 D-Index or more.

Overview

Norman A. Ratcliffe is affiliated with Swansea University in the United Kingdom and has contributed to research primarily in the fields of Medicine and Agricultural and Biological Sciences. Their work spans several subfields, including Infectious Diseases, Molecular Biology, Insect Science, Organic Chemistry, and Plant Science.

Their main research topics include:

  • Insect symbiosis and bacterial influences
  • SARS-CoV-2 and COVID-19 Research
  • COVID-19 Clinical Research Studies
  • Insect Resistance and Genetics
  • Synthesis and biological activity
  • Invertebrate Immune Response Mechanisms
  • Insect Pest Control Strategies

Norman A. Ratcliffe has published in several scientific journals, with frequent contributions to:

  • Parasites & Vectors
  • Developmental & Comparative Immunology
  • Frontiers in Physiology
  • Current Medicinal Chemistry
  • International Immunopharmacology

Some of the recent papers authored or co-authored by them include:

  • Overview of paratransgenesis as a strategy to control pathogen transmission by insect vectors, 2022, Parasites & Vectors
  • Biotechnological Potential of Streptomyces Siderophores as New Antibiotics, 2020, Current Medicinal Chemistry
  • COVID-19 and Hyperimmune sera: A feasible plan B to fight against coronavirus, 2020, International Immunopharmacology
  • COVID-19: don't forget deaf people, 2020, Nature
  • A rhamnose-binding lectin from Rhodnius prolixus and the impact of its silencing on gut bacterial microbiota and Trypanosoma cruzi, 2020, Developmental & Comparative Immunology

Their co-authorship network includes collaboration with researchers such as Helena Carla Castro, C.B. Mello, Paul Dyson, Marcelo Salabert Gonzalez, and Patrícia Azambuja, reflecting ongoing partnerships in overlapping research areas.

Best Publications

  • Entomopathogenic Fungi: New Insights into Host-Pathogen Interactions.

    Tariq Butt;Christopher Coates;Ivan Dubovskiy;Norman Ratcliffe

  • Prophenoloxidase activation: nonself recognition and cell cooperation in insect immunity.

    Norman A. Ratcliffe;Catherine Leonard;Andrew F. Rowley

  • Detection and partial characterisation of two antibacterial factors from the excretions/secretions of the medicinal maggot Lucilia sericata and their activity against methicillin-resistant Staphylococcus aureus (MRSA).

    Alyson Bexfield;Yamni Nigam;Stephen Thomas;Norman A. Ratcliffe

  • Bivalve immunity: Comparisons between the marine mussel (Mytilus edulis), the edible cockle (Cerastoderma edule) and the razor-shell (Ensis siliqua)

    E.C Wootton;E.A Dyrynda;N.A Ratcliffe

  • Insect natural products and processes: New treatments for human disease

    Norman A. Ratcliffe;Cicero B. Mello;Eloi S. Garcia;Tariq M. Butt

  • Gut microbiota and parasite transmission by insect vectors.

    Patricia Azambuja;Eloi S. Garcia;Norman A. Ratcliffe

  • Studies on prophenoloxidase and protease activity of Blaberus craniifer haemocytes

    Catherine Leonard;Kenneth Söderhäll;Norman A. Ratcliffe

  • A Novel Role for an Insect Apolipoprotein (Apolipophorin III) in β-1,3-Glucan Pattern Recognition and Cellular Encapsulation Reactions

    Miranda M. A. Whitten;Ian F. Tew;Bok L. Lee;Norman A. Ratcliffe

  • Studies on the in vivo cellular reactions of insects: An ultrastructural analysis of nodule formation in Galleria mellonella

    Norman A. Ratcliffe;Stephen J. Gagen

  • THE ROLE OF PROPHENOLOXIDASE ACTIVATION IN NON-SELF RECOGNITION AND PHAGOCYTOSIS BY INSECT BLOOD CELLS

    Catherine Leonard;Norman A. Ratcliffe;Andrew F. Rowley

  • Host Defence Reactions of the Shore Crab, Carcinus Maenas (L.), in Vitro

    Valerie J. Smith;N. A. Ratcliffe

  • Exploring the role of insect host factors in the dynamics of Trypanosoma cruzi–Rhodnius prolixus interactions

    Eloi S. Garcia;Norman A. Ratcliffe;Miranda M. Whitten;Marcelo S. Gonzalez

  • Innate Immunity in Insects: The Role of Multiple, Endogenous Serum Lectins in the Recognition of Foreign Invaders in the Cockroach, Blaberus discoidalis

    Raymond Wilson;Changwei Chen;Norman A. Ratcliffe

  • Phagocytic reduction and effects on lysosomal membranes by polycyclic aromatic hydrocarbons, in haemocytes of Mytilus edulis

    M.M. Grundy;M.N. Moore;S.M. Howell;N.A. Ratcliffe

  • The antibacterial activity against MRSA strains and other bacteria of a <500Da fraction from maggot excretions/secretions of Lucilia sericata (Diptera: Calliphoridae).

    Alyson Bexfield;A. Elizabeth Bond;Emily C. Roberts;Edward Dudley

  • Comparisons of PAH-induced immunomodulation in three bivalve molluscs

    E.C Wootton;E.A Dyrynda;R.K Pipe;N.A Ratcliffe

  • Maggot Therapy: The Science and Implication for CAM Part I-History and Bacterial Resistance.

    Yamni Nigam;Alyson Bexfield;Stephen B Thomas;Norman Arthur Ratcliffe

  • Maggot Therapy: The Science and Implication for CAM Part II—Maggots Combat Infection

    Yamni Nigam;Alyson Bexfield;Stephen Thomas;Norman Arthur Ratcliffe

  • Cellular defense reactions of insect hemocytes in vivo: Nodule formation and development in Galleria mellonella and Pieris brassicae larvae

    Norman A. Ratcliffe;Stephen J. Gagen

  • Trypanosoma cruzi immune response modulation decreases microbiota in Rhodnius prolixus gut and is crucial for parasite survival and development.

    Daniele P. Castro;Caroline S. Moraes;Marcelo S. Gonzalez;Norman A. Ratcliffe

Frequent Co-Authors

Patrícia Azambuja
Patrícia Azambuja Fluminense Federal University
Andrew F. Rowley
Andrew F. Rowley Swansea University
Eloi S. Garcia
Eloi S. Garcia Oswaldo Cruz Foundation
Kenneth Söderhäll
Kenneth Söderhäll Uppsala University
Tariq M. Butt
Tariq M. Butt Swansea University
Robin J. Law
Robin J. Law Centre for Environment, Fisheries and Aquaculture Science
Sietse O. Los
Sietse O. Los Swansea University
Holger Rohde
Holger Rohde Universität Hamburg
Andreas Vilcinskas
Andreas Vilcinskas University of Giessen
Jonas Schmidt-Chanasit
Jonas Schmidt-Chanasit Universität Hamburg

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