Search result Scientific imagery

2103518

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© Eric Tourneret / Biosphoto

Apidologie - A bee in front of an odor gun. This technique allows for an association between an odor and a sugary reward. A sweet solution is applied to the antennas and the bee stretches out its proboscis, its little trunk. This odor-reflex association has brought to light the bees' capacity to remember odors and the time necessary to acquire olfactory memory. But also more complex learning: for example, an odor A is associated with a sugary solution and an odor B is not. Then, shortly after, it is reversed: the odor A is no longer associated with sugar but the odor B is. Result: the bee is capable of replacing the first signal by the new one. Centre for , FranceResearch, CNRS, Université Paul Sabatier, Toulouse

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2103464

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© Eric Tourneret / Biosphoto

Honey bee (Apis mellifera) - Microchips are used by researchers to mark the bees and identify them with a scanner at the entrance to the hive or near the nurse bees. In that way, it is possible to monitor the bees' activities on an individual level. The times they go out, etc… Research Center HOBOS, Würzburg, Germany.

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© Christian Gautier / Biosphoto

Transversal cut of a spine of sea urchin  ; Lighting in bright background, magnification x 40. Colors by computer processing.

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© Christian Gautier / Biosphoto

Sponge spicules Chondrilla nucula polarized light 

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© Christian Gautier / Biosphoto

Microscopic view of moss branch Tortula papillosa 

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© Christian Gautier / Biosphoto

Spicules of sea cuncumber under microscope ; Lighting in polarized light with blade compensatory gypsum, magnified x 100. 

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© Stéphane Vitzthum / Biosphoto

Detail of the faceted eyes of a horsefly (Tabanidae sp) (1 facet = ommatidia)

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© Pascal Goetgheluck / Biosphoto

Ichthyosaur. Themnodontosaurus sp. Toarcian (180 million years). Germany. Cross-section of a rostrum, showing the different stages of tooth growth (large tooth with root, small sprouting tooth without root), diagnostic of the mechanism of continuous tooth growth in ichthyhyosaurs. - Blouet brothers collection

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© Jean-Claude Louchet / Biosphoto

Section of an beachgrass' leaf. A dye was used to show the structure of the leaf. Magnification of 27 on a 24x36

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© Jean-Claude Louchet / Biosphoto

Cross-section of a Wheat leaf. Dyes were used to distinguish the different parts of the leaf. Magnification of 20 in 24x36

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© Jean Lecomte / Biosphoto

A. Apple mummy left on the twig (2021), B. Twospotted Spider Mite (Tetranychus urticae) on the stalk of the mummy (macrography) on 04.04.2022, Banyuls sur mer, Pyrénées-Orientales, France

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© Jean Lecomte / Biosphoto

Apple mummy left on the twig, Mites are not visible at this scale. (2021) on 04.04.2022, Banyuls sur mer, Pyrénées-Orientales, France

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© Jean Lecomte / Biosphoto

Twospotted Spider Mite (Tetranychus urticae) in motion on an apple

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© Jean Lecomte / Biosphoto

Twospotted Spider Mite (Tetranychus urticae) in motion on an apple. Length = 0.42 mm

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© Jean Lecomte / Biosphoto

Twospotted Spider Mite (Tetranychus urticae) on the peduncle of an apple mummy from 2021. 03.04.2022, Banyuls sur mer, Pyrénées-Orientales, France

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© Mariana Ruiz Villarreal / LadyofHats / Lilian Gibert / Biosphoto

Diagram showing the anatomy of a mosquito (Culex pipiens).

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© Biodidac / mario modesto / Lilian Gibert / Biosphoto

A stylised bird skeleton 1. Skull, 2. Cervical vertebrae, 3. Furcula, 4. Coracoid, 5. Uncinate process, 6. Keel, 7. Patella, 8. Tarsometatarsus, 9. Digits, 10. Tibiotarsus (10 and 11), 11. Tibiotarsus (10 and 11), 12. Femur, 13. Pubis (innominate bone), 14. Ischium (innominate bone), 15. Illium (innominate bone), 16. Caudal vertebrae, 17. Pygostyle, 18. Synsacrum, 19. Scapula, 20. Lumbar vertebrae, 21. Humerus, 22. Ulna, 23. Radius, 24. Carpus, 25. Metacarpus, 26. Digits, 27. Alula.

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© Christoph Gerigk / Biosphoto

Tara Pacific expedition - november 2017 Bubble site 3D model preview  9°49'25" S 150°49'2" E, Bubble site, Normanby Island, Papua New Guinea, preview of animated photogrammetry model, Bubble Reef. This is a punctual record of a volcanic seeps site that is being investigated by several scientific missions. The scaled, georeferenced 3Dmodel is of millimetric resolution, it covers about 1000 m2 and includes the transect area of 600 m2 which has been investigated by the Tara team in 2017.

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© 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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© Paulo de Oliveira / Biosphoto

Zebrafish (Danio rerio), with human cancer. Zebrafish are a powerful tool for studying human cancers. Transgenic techniques have been employed to model different types of tumors, including leukemia, melanoma, glioblastoma and endocrine tumors. Transplantation of human cancer cells in embryos or adult zebrafish offers the advantage of studying the behavior of human cancer cells in a live organism. Chemical-genetic screens using zebrafish embryos have uncovered novel druggable pathways and new therapeutic strategies, some of which are now tested in clinical trials. Zebrafish has contributed to novel discoveries or approaches to novel therapies for human cancer. France

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2405129

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© Paulo de Oliveira / Biosphoto

Zebrafish (Danio rerio), with human cancer. Zebrafish are a powerful tool for studying human cancers. Transgenic techniques have been employed to model different types of tumors, including leukemia, melanoma, glioblastoma and endocrine tumors. Transplantation of human cancer cells in embryos or adult zebrafish offers the advantage of studying the behavior of human cancer cells in a live organism. Chemical-genetic screens using zebrafish embryos have uncovered novel druggable pathways and new therapeutic strategies, some of which are now tested in clinical trials. Zebrafish has contributed to novel discoveries or approaches to novel therapies for human cancer. France

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© 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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© 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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© 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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© Alberto Ghizzi Panizza / Biosphoto

detail of human eye

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© Eric Tourneret / Biosphoto

Honey bee (Apis mellifera) - The microchips are used by researchers to mark the bees and identify them by a scanner at the entrance to the hive or near the sugar distributors. It is thus possible to monitor the bee's activities on an individual level, such as the hours they leave the hive.

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© Eric Tourneret / Biosphoto

Honey bee (Apis mellifera) - Head of a bee with its proboscis, its tongue taken with a photographic technique of focus stacking. We can see, from top to bottom: an ocellus, the compound eyes, the antennas, the mandibles and the tongue. The ocelli are set in a triangle on the top of the head of a worker bee. The worker bee's compound eyes have 5000 facets. The antennas are composed of a flagellum (divided into 10 segments in the worker bee), a pedicle and a scape. The mandibles permit the bees to knead and shape the wax and propolis, fight, clean the hive and care for their queen or their brood. The tongue, called the proboscis, is a complex organ made up of many parts.

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2103526

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© Eric Tourneret / Biosphoto

Apidologie - Alexis Buatois observes a new virtual system of visual learning for the bees. The bees are suspended in the locomotion compensator conceived for the analysis of their visual orientation. The bee, immobilized by the thorax, is placed on a hollow sphere of which the movements, induced by the walking of the bee, are recorded by optical sensors that allow for the reconstruction of the bee's trajectory. The bee walking on the compensator is exposed to visual stimuli present inside a cylindrical arena. The CRCA has shown that the cognitive capacities of recognition of visual forms by domestic bees are similar to those of humans and primates. This work was published in the revue Nature 2004. CNRS. Université Paul Sabatier. Toulouse.

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2103519

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© Eric Tourneret / Biosphoto

Apidologie - A bee in front of an odor gun. This technique allows for an association between an odor and a sugary reward. A sweet solution is applied to the antennas and the bee stretches out its proboscis, its little trunk. This odor-reflex association has brought to light the bees' capacity to remember odors and the time necessary to acquire olfactory memory. But also more complex learning: for example, an odor A is associated with a sugary solution and an odor B is not. Then, shortly after, it is reversed: the odor A is no longer associated with sugar but the odor B is. Result: the bee is capable of replacing the first signal by the new one. Paul Sabatier University, CNRS, Toulouse, France

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© Eric Tourneret / Biosphoto

Apidologie - Bee's eye magnified X 270: In the electron microscope, the enlarged and coloured eye of a bee (Apis mellifera).

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© Paulo de Oliveira / Biosphoto

Seahorse Hypocampus sp. X-ray. Portugal

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© Georges Lopez / Biosphoto

Common polypody

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© Jean-Yves Grospas / Biosphoto

Commo, polypody

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© Christian Gautier / Biosphoto

Sunday sawfly ovipositor ; Polarized light illumination compensator Bereck, x 40

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© Christian Gautier / Biosphoto

Rabbit flee on white background ; Brightfield illumination, x 20

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© Christian Gautier / Biosphoto

Radiolarians on pink background ; Polarized light illumination compensator plate gypsum, x 50

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© Christian Gautier / Biosphoto

Knotted thread hydroid on black background ; Darkfield illumination, x 50

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© Christian Gautier / Biosphoto

Cross the spine of hen feather on black background ; Darkfield illumination, x 50

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© Christian Gautier / Biosphoto

Copper sulphate crystals in polarized light ; Polarized light illumination compensator Bereck, x 100

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© Christian Gautier / Biosphoto

Cross section of a human incisor ; Polarized light illumination compensator plate cellophane x 50

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© Christian Gautier / Biosphoto

Scale Sole gray background ; Polarized light illumination compensator plate gypsum, x 50

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© Christian Gautier / Biosphoto

Pork Tapeworm scolex ; Light polarized light with gypsum compensating plate, x 100

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© Christian Gautier / Biosphoto

Oyster spat on a black background ; Darkfield illumination, x 50

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© Christian Gautier / Biosphoto

Scale GoldFish on black background ; Darkfield illumination, x 20

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© Christian Gautier / Biosphoto

Scale GoldFish on blue background ; Polarized light illumination compensator plate gypsum, x 20

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© Christian Gautier / Biosphoto

Radula of Round-mouthed Snail on black background ; Polarized light illumination compensator plate gypsum x 100

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© Christian Gautier / Biosphoto

Cross section of Sea Lamprey ; Brightfield illumination, x 20

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© Christian Gautier / Biosphoto

Cross section of cat tongue tinted injected ; Darkfield illumination, x 100

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© Christian Gautier / Biosphoto

Section of rabbit caecum ; Darkfield illumination, x 100

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© Christian Gautier / Biosphoto

Pedipalp Pseudo-Scorpion ; Light polarized light, x 100