43,827 免費圖片適用於學生

生物學魚女性動物水下野生動物海上生活醫學醫生衛生學

Pallid sturgeon-1

Hybrid sunfish -4

Paddlefish-2

Rainbow trout-2

Young woman taking note and using laptop while studying at home

Appalachian brook crayfish

Pallid Sturgeon-1

Photomicrograph of a parasite. 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”.

Female Medical Doctor

Medical doctor woman

Female student cherry blossoms

Female student message board

Female student message board

Female student cherry blossoms

Female student japanese sword

Morone mississippiensis-2

Hybognathus hankinsoni-1

Medical Doctor Man

Medical Doctor Woman

Female student japanese sword

Female student study

Students love letter

Female student reading letter

Female student cherry blossoms

Female student reading letter

Glowlight Danio - Danio choprai

women wearing hygienic mask to prevent the Coronavirus

Medical doctor nurse

香港中大學生會及學聯成員抗議校董會主席換屆 02

香港學民思潮宣佈926中學生罷課安排 (2)

Female student thumbs up

Dolls couple student blackboard

Dolls couple student blackboard

Female student cherry blossoms

Female student

Female Student Message Board

Student Girl

Medical Doctor Patient

Largemouth bass-1

Medical Doctor Nurses

Free stock photo of brush, care, clean

Closeup view of green cactus

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”.

電子學细菌

Microbiologist preparing for antibody testing. A healthcare provider donning a pair of green latex gloves in order to protect herself during her subsequent interaction her next patient. 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”.

醫療藥物科學

香港學民思潮宣佈926中學生罷課安排 (7)

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”.

科學家控制

Mozambique classroom

A petri dish culture plate contained a growth medium of sheep blood agar (SBA), which was inoculated with Bacillus anthracis 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”.

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”.

科學家實驗室

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”.

電子學细菌

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”.

電子學细菌

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”.

Teacher and Students in the Class

Health officials inspecting specimens suspected of being connected to a hantavirus outbreak. 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”.

科學家科學

香港大學學生會新任校長論壇2018

Piranha fish

White sucker-2

Pallid sturgeon-1

Hooked Smallmouth bass-1

野生動物魚

Juvenile Northern Pike-2

Schoolboy is Raising Hand

A Couple of Students under a Cherry Blossom Tree

Ammonoidea Fossil

古生物學化石

Schoolboy Wearing a Backpack

Student Boy Raises His Hand

Bath Soap

Crying Female Student

Zoo park animals

阿拉伯

Doctor office examination

醫療藥物人

翼手龍屬

Blood pressure

Hooded skunk

哺乳动物動物

Oscar fish

Oregon chub

Appalachian brook crayfish-1

Juvenile Northern Pike-4

Pallid sturgeon-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”.

醫療藥物科學

Teacher

Amazing Silver Lined Fish

Juvenile largemouth bass

Schoolgirl

2 Hand in gloves holds spray bottle.

工具類廚房

1 Hand in gloves holds spray bottle.

工具類載具

Anatomy of humane body

醫療藥物插畫

Ear Pick

香港學生參考台灣太陽花學運 (5)

NASA's Stratospheric Observatory for Infrared Astronomy (SOFIA) was airborne for almost two hours during its first check flight at Waco, Texas on April 26, 2007.

航空器載具

Tyrannosaurus Dinosaur

古生物學恐龍

香港學生參考台灣太陽花學運 (12)

霸王龍臉

香港學生參考台灣太陽花學運 (4)

野生動物怪物

香港浸會大學及中文大學學生組織舉辦逃犯條例修訂論壇 05

Female student eat chocolate

Medical doctor woman

Female student root for

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