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Richard von Hertwig, German zoologist

Frank Rattray Lillie, American zoologist

Johannes Holtfreter, embryologist

Olive Swezy, US zoologist

Margaret Alger Hayden, US zoologist

Margaret D. Thompson, US zoologist

Estrella Eleanor Carothers, American zoologist

Ruth Winkley, US marine biologist

Ernst Haeckel, German zoologist

Ernst Haeckel, German zoologist

Mary Jane Rathbun, US zoologist

Mary Stuart MacDougall, US biologist

Agnes Mary Claypole Moody, US zoologist

Marie Agnes Hinrichs, US zoologist and physiologist

Researcher handling lab grown coral

August Weismann, German zoologist

Thomas Bell, British zoologist

Scientists in academic dress at Cambridge University, 1898

William Sollas, British zoologist

Viola Shelly Shantz, US zoologist

Schultz and Stern, US geneticists

Jean Pateels, Belgian biologist

Nathan Cobb, US zoologist

Bacteriology laboratory

Elizabeth Kinney, US zoologist

John James Audubon, French-US naturalist

Mary Jane Rathbun, US zoologist

Nettie Maria Stevens, US geneticist

David Bannerman, British ornithologist

Joel Asaph Allen, US ornithologist

Geneticists Dunn, Ephrussi and Stern

Charles Valentine Riley, British-US entomologist

Gustaf Retzius, Swedish anatomist

Clinton Merriam, US naturalist

Florence Lowther, US zoologist

Selman Waksman, microbiologist

Edwin Conklin, US zoologist

'Mammalia' (1839), 'The Zoology of the Voyage of HMS Beagle'

Florence Peebles, US biologist

Beetle research

Researchers using infrared camera to study wolves and sheep

George Nuttall, US-British bacteriologist

Robert Remak, Polish-German neurologist

Edward Wright, Irish zoologist

Theophil Studer, Swiss zoologist

Alfred Velpeau (1795-18)

Alfred Velpeau, French surgical anatomist

Louis Agassiz, Swiss-US naturalist

Natural History Museum expedition, 1976

Henry Walter Bates, British naturalist

Barbara McClintock, American geneticist

James Chester Bradley, US entomologist

Warren Lewis, US embryologist

Libbie Hyman, US zoologist

Benjamin Hawkins, British sculptor

Curt Stern, German-US geneticist

Herbert Jennings, US geneticist

Henry and Bannerman with bird-of-prey

Apsley Cherry-Garrard, British explorer

Beetle research

James Chester Bradley, US entomologist

Alfred Sturtevant, US geneticist

Edward Laurens Mark, US zoologist

Giovanni Battista Grassi, Italian zoologist

Stem cell embryology research

Ann Haven Morgan, American zoologist

Isabella Gordon, Scottish marine biologist

Gertrude Van Wagenen, American biologist

1878 Sir Richard Owen photograph portrait

1880's Sir Richard Owen and Grandaughter

William Harvey, English physician

William Taliaferro, US parasitologist

Raphael Blanchard, French parasitologist

Galvani's electricity experiments, 1780s

Ross Harrison, US biologist

John Hutchinson, zoologist

Konrad Gessner, Swiss naturalist

Julian Huxley, British evolutionary biologist

Julian Huxley, evolutionary biologist

Developing fish egg, light micrograph

Darwin's 'The Descent of Man' (1871)

Grasshopper

Ernest Austen, British entomologist

Karl von Frisch, Austrian zoologist

Neel and Miller, US geneticists

Grey squirrel being dissected

1905 Edwin Ray Lankester Zoologist

Aristotle (384-322 BC)

Giovanni Grassi, Italian zoologist

'Birds' (1841), 'The Zoology of the Voyage of HMS Beagle'

Lionel Rothschild, British zoologist

Lab-grown corals

Lab-grown corals

Lab-grown corals

Lab-grown corals

Lab-grown corals

Saul Adler, British medical scientist

Maurice Whittinghill, US geneticist

Fritz Schaudinn, German microbiologist

Plant geneticists from Cornell University, 1929

Theodosius Dobzhansky, Russian-US geneticist

Elizabeth C. Crosby, American neuroanatomist

Ambrose Godfrey, German chemist

Richard Owen, British zoologist and palaeontologist

Cyprien Combier, French mariner

Scientist artificially feeding ticks

Researcher holding biological samples

High resolution X-ray CT scanner

Marine ecosystems research

Patten and Kramer, American embryologists

Stem cell embryology research

Stem cell embryology research

Insect pupae from prehistoric faeces

Fossil collection, University of Texas

Cave research, Mexico

George Boulenger, Belgian zoologist

George Boulenger, Belgian zoologist

Charles Darwin, British naturalist

Stick insect

Evelyn Cheesman, British entomologist

Charles Darwin, British naturalist

1870 Karl Ernst Von Baer Embryology

Fossil analysis at Neanderthal excavation site

British large Blue butterfly colln. 1865

John Children, British chemist

Joshua Brookes, English anatomist

Titan beetle

Hercules beetle

Elephant beetle

Richard Goldschmidt, German-US geneticist

Robert Wiedersheim, German anatomist

Zebrafish embryo SEM X100

Thomas Hunt Morgan, US geneticist

Alexander Wilson, ornithologist

Mirsky and Schultz, US biologists

Wallace's Malay butterflies, 19th century

Charles Gaudichaud, French botanist

Morgan and Emerson, US geneticists

William Beebe aboard the Antares, 1930s

Ernst Haeckel, German zoologist

Ecological research laboratory, France

Baby sea turtle

Theodosius Dobzhansky, Russian-US geneticist

Beatrice Mintz, US embryologist

Entomology trip, Guyana

Cat foetus, SEM

Pig embryo

Pig embryos

Cat foetus

Cow embryo

Monkey foetus

Mouse embryo, light micrograph

Mouse embryo, fluorescence micrograph

Al-Jahiz

Al-Jahiz

Bruce Wallace and Hampton Carson

Researcher marking a gull's egg

Marine ecosystems research

Yuri Filipchenko, Russian entomologist

Beetles collected by Darwin

Beetles collected by Darwin

Dog behaviour research

Microbiology research

Calvin Bridges, US geneticist

Bacterial hydrophobicity test

Cut rhino horn

Vaccine research, 1893

Marine ecosystems research

Marine ecosystems research

Asian hornet research

Shelving and storage of vertebrate skeletons

Alexander von Humboldt, German naturalist

Dick Swaab, Dutch neurobiologist

Charles Darwin, British naturalist

Karl Gegenbaur, German anatomist

Francis Balfour, British embryologist

Edward Knipling, US entomologist

Frank Evers Beddard, British zoologist

Palaeontologist holding fossilized shark vertebral column

Mouse embryo, light micrograph

Woodmouse foetus, light micrograph

Foetal rat head, light micrograph

Pathology slides

Fish food research

Natural pesticide research

Thomas Hunt Morgan, US geneticist

1870's Carl Christoph Vogt Portrait

G. Robert Coatney, US parasitologist

Martin D. Young, US parasitologist

1871 George John Romanes Darwin friend

'Fossil Mammals' (1840) from Darwin's Beagle voyage

Cow fertility research

Cornelia Maria Clapp, US zoologist

Necropsy lab

Darwin's mouse, 19th century

1871 George John Romanes portrait colour

Neurobiologist with beehive

Domestic pigeon

Entomologist collecting flying insects

Biologist tagging the flipper of a southern elephant seal