32,272 免费图片适用于生物学

鱼水下动物海上生活野生动物海洋水意识科学洋

Hybognathus hankinsoni-1

Channel catfish-2

Quilback carpsucker-3

Rock Bass

Okaloosa darter-1

Yellow bullhead catfish-3

Amazing Silver Lined Fish

Freshwater drum

Brownish Fish

Sturgeon

Pallid sturgeon-4

大食蚁兽

野生动物动物

Yellow bullhead catfish-1

Kawaii St. Valentine's dino with heart

情人节恐龙

Glowlight Danio - Danio choprai

Paddlefish-2

Largemouth bass-1

Human Heart

医疗药物科学

Black bullhead-2

野生动物鱼

Logperch-1

Okaloosa darter-1

A scientist implementing molecular testing. Original image sourced from US Government department: Public Health Image Library, Centers for Disease Control and Prevention. Under US law this image is copyright free, please credit the government department whenever you can”.

科学家医学

A scientist examining the results of a hemagglutinin inhibition (HI) test. Original image sourced from US Government department: Public Health Image Library, Centers for Disease Control and Prevention. Under US law this image is copyright free, please credit the government department whenever you can”.

科学家实验室

Black Bullhead catfish-2

野生动物鱼

女童子军

Copper Tetra

童子军

Carassius auratus-2

Juvenile Northern Pike

Smallmouth bass-1

Tyrannosaurus Dinosaur

古生物学恐龙

Eulachon - Thaleichthys pacificus

Hybrid sunfish -2

Dolly Varden Char

Owl

Pea Aphid

生物学性质

Devils Hole pupfish-5

野生动物鱼

A 3D illustration provides a graphical representation of a single norovirus virion, set against a beige background. Original image sourced from US Government department: Public Health Image Library, Centers for Disease Control and Prevention. Under US law this image is copyright free, please credit the government department whenever you can”.

Rescue Wing Conducts

铁路列车人

Ash Meadows Speckled Dace-4

野生动物鱼

Purple crab

Front Cichlid Cyphotilapia Frontosa

Sea Otter

古老的恐龙

Rabbit

野生动物动物

Doctor woman with white coat and stethoscope. Coronavirus.

医疗药物健康

Sea turtle animal

野生动物动物

Closeup view of green cactus

Blue catfish-4

Nudibranch Party

Virginia River Spinedace

Novel Coronavirus SARS-CoV-2–This scanning electron microscope image shows SARS-CoV-2—also known as 2019-nCoV, the virus that causes COVID-19. Original image sourced from US Government department: The National Institute of Allergy and Infectious Diseases. Under US law this image is copyright free, please credit the government department whenever you can”.

Pond Loach fish - Misgurnus anguillicaudatus

Bull Trout-7

Hybrid sunfish -4

Biologists search for Fountain Darter-1

得克萨斯州生物学家

Tyrannosaurus Dinosaur

古生物学恐龙

Pallid Sturgeon-1

Pallid Sturgeon-4

Shorthead redhorse

Laboratory technician working with a cell culture solution, using a syringe to add some of the sample to a glass bottle. Original image sourced from US Government department: Public Health Image Library, Centers for Disease Control and Prevention. Under US law this image is copyright free, please credit the government department whenever you can”.

Rainbow Trout-1

A field epidemiologist performing a mouth swab inside the beak of a white duck, in order to carry out an infectious disease investigation. Original image sourced from US Government department: Public Health Image Library, Centers for Disease Control and Prevention. Under US law this image is copyright free, please credit the government department whenever you can”.

Allegheny Crayfish-3

Erimyzon tenuis

Smallmouth Bass-3

Scientist removes cell growth medium from a 6–well plate in preparation for a plaque assay, which is a test that allows scientists to count how many flu virus particles (virions) are in a mixture. Original image sourced from US Government department: Public Health Image Library, Centers for Disease Control and Prevention. Under US law this image is copyright free, please credit the government department whenever you can”.

医疗药物科学

A scientist testing bacterial samples for their antimicrobial susceptibility. Original image sourced from US Government department: Public Health Image Library, Centers for Disease Control and Prevention. Under US law this image is copyright free, please credit the government department whenever you can”.

科学家科学

Giant Cusk-Eel - Spectrunculus grandis

Devils Hole pupfish-1

Squid

Scientists using automated methods to extract bacterial DNA, for use in whole genome sequencing (WGS). Original image sourced from US Government department: Public Health Image Library, Centers for Disease Control and Prevention. Under US law this image is copyright free, please credit the government department whenever you can”.

科学家实验室

A 3D illustration provides a graphical representation of a single norovirus virion, set against a white background. Original image sourced from US Government department: Public Health Image Library, Centers for Disease Control and Prevention. Under US law this image is copyright free, please credit the government department whenever you can”.

电子学细菌

A medical illustration of vancomycin–resistant, Enterococci sp. bacteria. Original image sourced from US Government department: Public Health Image Library, Centers for Disease Control and Prevention. Under US law this image is copyright free, please credit the government department whenever you can”.

电子学细菌

Novel Coronavirus SARS-CoV-2–Transmission electron micrograph of SARS-CoV-2 virus particles, isolated from a patient. Original image sourced from US Government department: The National Institute of Allergy and Infectious Diseases. Under US law this image is copyright free, please credit the government department whenever you can”.

Brook Trout juvenile-2

野生动物鱼

Ash Meadows Amargosa pupfish-1

Novel Coronavirus SARS-CoV-2–Colorized scanning electron micrograph of an apoptotic cell (blue) heavily infected with SARS-COV-2 virus particles (yellow), isolated from a patient sample. Original image sourced from US Government department: The National Institute of Allergy and Infectious Diseases. Under US law this image is copyright free, please credit the government department whenever you can”.

Biologists search for Fountain Darter-6

得克萨斯州生物学家

Biologists search for Fountain Darter-1

得克萨斯州生物学家

Biologists search for Fountain Darter-1

得克萨斯州生物学家

Biologists search for Fountain Darter-2

得克萨斯州生物学家

Biologists search for Fountain Darter-1

得克萨斯州生物学家

Biologists search for Fountain Darter-3

得克萨斯州生物学家

Biologists search for Fountain Darter-2

得克萨斯州生物学家

Pallid Sturgeon-2

Blue catfish

A 3D image of a group of anaerobic, spore-forming, Clostridium sp. organisms. Original image sourced from US Government department: Public Health Image Library, Centers for Disease Control and Prevention. Under US law this image is copyright free, please credit the government department whenever you can”.

电子学细菌

Divers photographing a paddlefish

Yellow perch-4

A scientist holding up a glass slide used for a run on a sequencing machine. Original image sourced from US Government department: Public Health Image Library, Centers for Disease Control and Prevention. Under US law this image is copyright free, please credit the government department whenever you can”.

科学家控制

Ammonoidea Fossil

恐龙骨骼古生物学

Hooked Smallmouth bass

Oscar fish

Grouper in the tank

Hammerhead Shark

The narrow fuselage of NASA'S Ikhana unmanned science aircraft is evident in this view from underneath. Mar 5, 2007.

航空器军队

Partridge

Smallmouth bass

野生动物鱼

Brown trout pair

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