167 pictures found
© Vincent Premel / Biosphoto
Tadpoles of glass frog - Yasuni National Parl, Ecuador.
© Fred Muller / Biosphoto
Fleischmann's Glass Frog egg mass under a leaf in Guatemala
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Nasturtium flower mutation: the female part (style) is replaced
© Jean-Michel Groult / Biosphoto
© Jean-Michel Groult / Biosphoto
Nasturtium flower mutation: the female part (style) is replaced by a leaf embryo. This benign mutation is called reversion.
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Ichthyosaur. Ichthyosaurus sp. Hettangian (-200 million years). Bristol Bay, UK. Detail inside the rib cage of an embryo. A sea urchin is visible
© Pascal Goetgheluck / Biosphoto
© Pascal Goetgheluck / Biosphoto
Ichthyosaur. Ichthyosaurus sp. Hettangian (-200 million years). Bristol Bay, UK. Detail inside the rib cage of an embryo. A sea urchin is visible under the ribs.- Blouet brothers collection
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Ichthyosaur. Ichthyosaurus sp. Hettangian (-200 million years).
© Pascal Goetgheluck / Biosphoto
© Pascal Goetgheluck / Biosphoto
Ichthyosaur. Ichthyosaurus sp. Hettangian (-200 million years). Bristol Bay, UK. Rib cage of a female containing at least 4 embryos. Extremely rare discovery in England where only 5 skeletons with embryos are known out of thousands of remains discovered since the beginning of the 19th century. This specimen is by far the best preserved.- Blouet brothers collection
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Ichthyosaur. Ichthyosaurus sp. Hettangian (-200 million years). Bristol Bay, UK. Rib cage of a female
© Pascal Goetgheluck / Biosphoto
© Pascal Goetgheluck / Biosphoto
Ichthyosaur. Ichthyosaurus sp. Hettangian (-200 million years). Bristol Bay, UK. Rib cage of a female containing at least 4 embryos. Extremely rare discovery in England where only 5 skeletons with embryos are known out of thousands of remains discovered since the beginning of the 19th century. This specimen is by far the best preserved.- Blouet brothers collection
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Ichthyosaur. Ichthyosaurus sp. Hettangian (-200 million years). Bristol Bay, UK. Rib cage of
© Pascal Goetgheluck / Biosphoto
© Pascal Goetgheluck / Biosphoto
Ichthyosaur. Ichthyosaurus sp. Hettangian (-200 million years). Bristol Bay, UK. Rib cage of a female containing at least 4 embryos. Extremely rare discovery in England where only 5 skeletons with embryos are known out of thousands of remains discovered since the beginning of the 19th century. This specimen is by far the best preserved.- Blouet brothers collection
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African Elephant embryo preserved in bottle. Mpumalanga. South Africa.
© Roger de La Harpe / Biosphoto
© Roger de La Harpe / Biosphoto
African Elephant embryo preserved in bottle. Mpumalanga. South Africa.
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Pfeffer's Flamboyant Cuttlefish (Metasepia pfefferi) embryo in egg, Puri Jati dive site, Seririt, Buleleng Regency, Bali, Indonesia
© Colin Marshall / Biosphoto
© Colin Marshall / Biosphoto
Pfeffer's Flamboyant Cuttlefish (Metasepia pfefferi) embryo in egg, Puri Jati dive site, Seririt, Buleleng Regency, Bali, Indonesia
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Free Madagascar Frog (Guibemantis liber) eggs laid on a leaf in the form of a jelly protecting the embryos, transformation is already well under way,
© Jean-Yves Grospas / Biosphoto
© Jean-Yves Grospas / Biosphoto
Free Madagascar Frog (Guibemantis liber) eggs laid on a leaf in the form of a jelly protecting the embryos, transformation is already well under way, Andasibe, Madagascar
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Free Madagascar Frog (Guibemantis liber) eggs laid on a leaf in
© Jean-Yves Grospas / Biosphoto
© Jean-Yves Grospas / Biosphoto
Free Madagascar Frog (Guibemantis liber) eggs laid on a leaf in the form of a jelly protecting the embryos, transformation is already well under way, Andasibe, Madagascar
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Royal Farlowella (Sturisomatichthys aureus) eggs after 130 h of incubation
© Aqua Press / Biosphoto
© Aqua Press / Biosphoto
Royal Farlowella (Sturisomatichthys aureus) eggs after 130 h of incubation
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Royal Farlowella (Sturisomatichthys aureus) eggs after 84 h of incubation
© Aqua Press / Biosphoto
© Aqua Press / Biosphoto
Royal Farlowella (Sturisomatichthys aureus) eggs after 84 h of incubation
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Royal Farlowella (Sturisomatichthys aureus) eggs after 60 h of incubation
© Aqua Press / Biosphoto
© Aqua Press / Biosphoto
Royal Farlowella (Sturisomatichthys aureus) eggs after 60 h of incubation
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Royal Farlowella (Sturisomatichthys aureus) eggs after 60 h of incubation
© Aqua Press / Biosphoto
© Aqua Press / Biosphoto
Royal Farlowella (Sturisomatichthys aureus) eggs after 60 h of incubation
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Zebrafish, Danio rerio, fry on aquarium. Since the 1930s, zebra fish have been a model
© Paulo de Oliveira / Biosphoto
© Paulo de Oliveira / Biosphoto
Zebrafish, Danio rerio, fry on aquarium. Since the 1930s, zebra fish have been a model organism for studying human diseases. The fertilized eggs, embryos, and fry are transparent, allowing scientists to easily observe and study topics such as tumor growth, brain tissue development, and blood vessel growth. Portugal
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Zebrafish (Danio rerio), fry on aquarium. Since the 1930s, zebra fish have been a model organism for studying human diseases. The fertilized eggs, embryos, and fry are transparent,
© Paulo de Oliveira / Biosphoto
© Paulo de Oliveira / Biosphoto
Zebrafish (Danio rerio), fry on aquarium. Since the 1930s, zebra fish have been a model organism for studying human diseases. The fertilized eggs, embryos, and fry are transparent, allowing scientists to easily observe and study topics such as tumor growth, brain tissue development, and blood vessel growth. Portugal
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Newborn Zebrafish (Danio rerio). Zebrafish are used to identify a new gene responsible for promoting melanoma on humans. Melanocytes, the same cells
© Paulo de Oliveira / Biosphoto
© Paulo de Oliveira / Biosphoto
Newborn Zebrafish (Danio rerio). Zebrafish are used to identify a new gene responsible for promoting melanoma on humans. Melanocytes, the same cells that are are responsible for the pigmentation of zebrafish stripes and for human skin color, are also where melanoma originates. Researchers have now used zebrafish to identify a new gene responsible for promoting melanoma. France
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Zebrafish (Danio rerio), used on cancer research. The use of human oncogenes, often in conjunction with fluorescent reporters to aid the monitoring of tumor
© Paulo de Oliveira / Biosphoto
© Paulo de Oliveira / Biosphoto
Zebrafish (Danio rerio), used on cancer research. The use of human oncogenes, often in conjunction with fluorescent reporters to aid the monitoring of tumor initiation and progression, and the isolation and in vivo imaging of cancer cells, demonstrated the cross-species ability of oncogenes to transform zebrafish cells. Similar cancer experiments have been made with mice, but the zebrafish approach may be faster and cheaper, making it accessible for more patients. Cancer research. France
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Human tumor cells, colored red, growing in zebrafish (Danio rerio) embryo. Scientists inserted human cancer cells into zebrafish embryos and allowed them to grow
© Paulo de Oliveira / Biosphoto
© Paulo de Oliveira / Biosphoto
Human tumor cells, colored red, growing in zebrafish (Danio rerio) embryo. Scientists inserted human cancer cells into zebrafish embryos and allowed them to grow for several days. Then added chemotherapy to the fishes’ water and found that some of the tumors shrank and others didn’t. The use of human oncogenes, often in conjunction with fluorescent reporters to aid the monitoring of tumor initiation and progression, and the isolation and in vivo imaging of cancer cells, demonstrated the cross-species ability of oncogenes to transform zebrafish cells. Similar cancer experiments have been made with mice, but the zebrafish approach may be faster and cheaper, making it accessible for more patients. Cancer research. France
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Human tumor cells, colored red, growing in zebrafish (Danio rerio) embryo. Scientists inserted human cancer cells into zebrafish embryos and allowed them to grow for
© Paulo de Oliveira / Biosphoto
© Paulo de Oliveira / Biosphoto
Human tumor cells, colored red, growing in zebrafish (Danio rerio) embryo. Scientists inserted human cancer cells into zebrafish embryos and allowed them to grow for several days. Then added chemotherapy to the fishes’ water and found that some of the tumors shrank and others didn’t. The use of human oncogenes, often in conjunction with fluorescent reporters to aid the monitoring of tumor initiation and progression, and the isolation and in vivo imaging of cancer cells, demonstrated the cross-species ability of oncogenes to transform zebrafish cells. Similar cancer experiments have been made with mice, but the zebrafish approach may be faster and cheaper, making it accessible for more patients. Cancer research. France
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Microinjection of Zebrafish (Danio rerio) embryos to analyse gene function. Embryo being micro-injected into the yolk with
© Paulo de Oliveira / Biosphoto
© Paulo de Oliveira / Biosphoto
Microinjection of Zebrafish (Danio rerio) embryos to analyse gene function. Embryo being micro-injected into the yolk with RNA (ribonucleic acid) mixed with a red dye. One of the advantages of studying zebrafish is the ease with which specific gene products can be added to or eliminated from the embryo by microinjection. Morpholinos, which are synthetic oligonucleotides with antisense complementarity to target RNAs, can be added to the embryo to reduce the expression of a particular gene product. USA
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Red-eyed tree frog (Agalychnis callidryas) eggs, Siquirres, Rainforest, Limon, Costa Rica
© Michael Turco / Biosphoto
© Michael Turco / Biosphoto
Red-eyed tree frog (Agalychnis callidryas) eggs, Siquirres, Rainforest, Limon, Costa Rica
© Michael Turco / Biosphoto
Red-eyed tree frog (Agalychnis callidryas) eggs, Siquirres, Rainforest, Limon, Costa Rica
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Fleischmans glass frog (Hyalinobatrachium fleischmanni) and eggs,
© Michael Turco / Biosphoto
© Michael Turco / Biosphoto
Fleischmans glass frog (Hyalinobatrachium fleischmanni) and eggs, Siquirres, Rainforest, Limon, Costa Rica
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Fleischmans glass frog (Hyalinobatrachium fleischmanni) and eggs, Siquirres, Rainforest, Limon, Costa Rica
© Michael Turco / Biosphoto
© Michael Turco / Biosphoto
Fleischmans glass frog (Hyalinobatrachium fleischmanni) and eggs, Siquirres, Rainforest, Limon, Costa Rica
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Fleischmans glass frog (Hyalinobatrachium fleischmanni) and eggs, Siquirres, Rainforest, Limon, Costa Rica
© Michael Turco / Biosphoto
© Michael Turco / Biosphoto
Fleischmans glass frog (Hyalinobatrachium fleischmanni) and eggs, Siquirres, Rainforest, Limon, Costa Rica
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Chick embryo 48 hours ; Oblique illumination in brightfield, x 20
© Christian Gautier / Biosphoto
© Christian Gautier / Biosphoto
Chick embryo 48 hours ; Oblique illumination in brightfield, x 20
© Jeffrey Rotman / Biosphoto
Embryos of Thresher Sharkans Watch Gulf of California
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Fisherman holds embryos of Thresher Shark Gulf of California
© Jeffrey Rotman / Biosphoto
© Jeffrey Rotman / Biosphoto
Fisherman holds embryos of Thresher Shark Gulf of California
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Herring Gull removing and eating embryo from dead Roe Deer
© Steen Drozd Lund / Biosphoto
© Steen Drozd Lund / Biosphoto
Herring Gull removing and eating embryo from dead Roe Deer
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Herring Gull removing and eating embryo from dead Roe Deer
© Steen Drozd Lund / Biosphoto
© Steen Drozd Lund / Biosphoto
Herring Gull removing and eating embryo from dead Roe Deer
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Post-larva of crested newt in a pond prairie Fouzon France ; before the release of the egg
© Bruno Guénard / Biosphoto
© Bruno Guénard / Biosphoto
Post-larva of crested newt in a pond prairie Fouzon France ; before the release of the egg
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Post-larva of crested newt in a pond prairie Fouzon France ; before the release of the egg
© Bruno Guénard / Biosphoto
© Bruno Guénard / Biosphoto
Post-larva of crested newt in a pond prairie Fouzon France ; before the release of the egg
© Bruno Guénard / Biosphoto
Formation of Agile Frog tadpole Prairie Fouzon France
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Chick embryo of 48 hours ; Brightfield illumination, 20 x Canon EOS 450D 12 megapixel
© Christian Gautier / Biosphoto
© Christian Gautier / Biosphoto
Chick embryo of 48 hours ; Brightfield illumination, 20 x Canon EOS 450D 12 megapixel
© Samuel Blanc / Biosphoto
Embryo in an egg frozen Emperor Penguin Adelie Land
© Samuel Blanc / Biosphoto
Embryo in an egg frozen Emperor Penguin Adelie Land
© Samuel Blanc / Biosphoto
Embryo in an egg frozen Emperor Penguin Adelie Land
© Samuel Blanc / Biosphoto
Embryo in an egg frozen Emperor Penguin Adelie Land
© Jeffrey Rotman / Biosphoto
Embryos of Bigeye Hound Shark with yolk sac still attached
© Jean-Michel Labat / Biosphoto
6 days-old chicken embryo
© Claudius Thiriet / Biosphoto
Longitudinal cut of a Corn seed during germination ; View showing cotyledon and embyron
© Claudius Thiriet / Biosphoto
Longitudinal cut of a Corn seed during germination ; View showing cotyledon and embyron
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Longitudinal cut of a Corn seed during germination ; View showing
© Claudius Thiriet / Biosphoto
© Claudius Thiriet / Biosphoto
Longitudinal cut of a Corn seed during germination ; View showing cotyledon and embyron