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Portrait of smiling female teacher wearing protective eyewear, standing behind desk with microscope and test tubes in rack

Teacher and students during chemistry lesson, wearing protective eyewear and looking at test tubes

Chemistry teacher pouring chemicals into test tubes

Microscope and test tubes

Microscope and test tubes

Microscope and test tubes

Scientist dropping liquid in test tubes

Scientist dropping liquid in test tubes

Test tubes in a test tube rack

Test tubes in a test tube rack

Empty tubes in a test tube rack

Empty tubes in a test tube rack

Scientist holding test tube rack

Students with their teacher working in chemistry lab, teacher holding test tube with green liquid

実験室

カラフルな液体の入った試験管

Teacher and students during chemistry lesson, wearing protective eyewear and looking at test tube with green liquid

Laboratory equipment

Teacher and student during chemistry lesson, wearing protective eyewear and looking at test tube with green liquid

実験器具

Montage of microscope and test tubes

Chemist in protective visor examining test tube, close-up

Girl holding glassware and looking away with smile

Mid adult man in laboratory, holding rack of test tubes

Woman in laboratory, holding rack of test tubes

Children look into microscope in laboratory

Children look into microscope in laboratory

Rack of test tubes with solution on counter in lab

Rack of test tubes with solution on counter in lab

Scientist examining liquid in test tubes

Scientist examining test tubes

Chemist examining test tubes

Female scientist filling test tube in laboratory, side view

液体の研究をする30代女性

Test tubes in test tube rack

Female doctor holding medical samples in a laboratory

Chemist dropping liquid into test tubes, close-up

Portrait of little boy with test tubes and microscope

Portrait of little boy with test tubes and microscope

Mid adult man in laboratory, holding rack of test tubes

Girl students using microscope, conducting scientific experiment in laboratory classroom

Girl student using microscope, conducting scientific experiment in laboratory classroom

実験室

Boy (5-7) wearing white coat holding test tube in laboratory, smiling

Laboratory Test & Medicines

Laboratory Test & Medicines

Laboratory Test & Medicines

Microscope and test tubes

Science student with teacher in class looking through microscope

実験室

試験管

試験管

試験管

試験管

Man in laboratory, pouring liquid into row of test tubes

Man in laboratory, pouring liquid into row of test tubes

Scientist using pipette

Scientist using pipette

Scientist using pipette

Female scientist working in laboratory, cropped view

Laboratory assistant conducting experiment, cropped view of hands

Female scientist working in laboratory, side view

Female scientist working in laboratory, cropped view

Female scientist working in laboratory, side view

実験器具

Scientist examining liquid in test tubes

Rack of test tubes filled with liquid, close-up

Chemist adding liquid to test tubes in rack, close-up

実験器具

実験室

実験室

Food samples in test tubes in a test tube rack

Food samples in test tubes in a test tube rack

Food samples in test tubes in a test tube rack

Girl holding a pencil and looking up with smile

Scientist pipetting solution into tubes

Students use microscope in class

実験器具

実験器具

Girl students using microscope, conducting scientific experiment in laboratory classroom

Portrait of little boy with test tube and microscope

Portrait of little boy with test tube and microscope

Rack of test tubes with solution on counter in lab

Rack of test tubes with solution on counter in lab

Rack of test tubes with solution on counter in lab

Rack of test tubes with solution on counter in lab

Rack of test tubes with solution on counter in lab

Rack of test tubes with solution on counter in lab

Rack of test tubes with solution on counter in lab

Rack of test tubes with solution on counter in lab

Scientist pipetting samples into eppendorf tubes

Close-up of test tubes on table

Close-up of test tubes on table

Close-up of test tubes on table

Close-up of test tubes on table

Close-up of test tubes on table

Elementary school students in the classroom with a microscope

Mid adult woman in laboratory inserting test tube into tray

Mid adult woman in laboratory inserting test tube into tray

Mid adult woman in laboratory inserting test tube into tray

Lab assistant holding test tube rack

Lab assistant holding test tube rack

Lab assistant holding test tube rack

Test tubes

Chemistry student with test tubes

Laboratory Test & Medicines

Close up of microscope slides in lab

Close up of rack of test tubes with solution in lab

Close up of rack of test tubes with solution in lab

Close up of rack of test tubes with solution in lab

Close-up of a scientist's hand experimenting in a lab

Scientist dropping liquid in test tubes

Close up of pipette dropping sample onto microscope slide in lab

顕微鏡を覗く女性研究員

Test tubes in rack

実験をする研究員

顕微鏡を覗く女性研究員

Students watching teacher use microscope in lab

試験管

Scientist holding test tubes

Test tubes in a rack

Test tubes in a rack

Test tubes in a rack

Test tubes in a rack

Test tubes in a rack

Test tubes in a rack

Blood samples in test tubes

実験をする小学生

Scientist holding test tube

Test tubes in a test tube rack

Test tubes in a test tube rack

Woman Experimenting in Lab

Woman Experimenting in Lab

Woman Experimenting in Lab

Woman Experimenting in Lab

Primary schoolgirls and boy doing experiment at classroom desk

Two Students in Lab

Scientific samples in test tubes with microscope

Liquid in test tubes in a rack

Liquid-filled test tubes in rack

Test tubes in rack, close-up

Liquid-filled test tubes in rack

Students in science class experimenting with test tubes

Student in science class experimenting with test tubes

Lentils in test tubes in a test tube rack

Bored teenage girl in high school chemistry class using cell phone

Bored teenage girls in high school class using cell phones

Test tubes in lab

Test tubes in laboratory

Laboratory Test & Medicines

Woman in laboratory, holding tray of test tubes

Glass beakers filled with test tubes, still life, close-up

Nitrogen inside tubes in laboratory, close-up

Test tubes in rack with one pipette inside, low angle.

Test tubes with colored liquid inside in rack, close-up

Test tubes with colored liquid inside in rack, close-up

Germany, Bavaria, Munich, Test tubes in test tube rack

Germany, Young scientist pipetting blue liquid into test tubes, close up

Germany, Young scientist pipetting blue liquid into test tubes, close up

Germany, Young scientist pipetting blue liquid into test tubes, close up

Germany, Young scientist pipetting blue liquid into test tubes, close up

Germany, Young scientist pipetting blue liquid into test tubes, close up

Germany, Young scientist pipetting blue liquid into test tubes, close up

Germany, Young scientist pipetting blue liquid into test tubes, close up

Germany, Young scientist pipetting blue liquid into test tubes, close up

Test tubes with different coloured liquids in rack

Blond little boy using microscope

Lab samples in test tubes

Scientist holding a test tube above a rack with liquid-filled test tubes

Test tubes in laboratory

Close up of test tubes in rack in laboratory

Close up of test tubes in rack in laboratory

Scientist in lab holding test tubes in rack

Test tubes

Test tubes

Portrait of blond little boy using microscope

Man in laboratory, wearing protective gloves, holding test tube

Female scientist holding up plant samples in test tubes

Germany, Bavaria, Munich, Scientist pouring red liquid with pipette in test tube for medical research in laboratory

Germany, Bavaria, Munich, Scientist pouring red liquid with pipette in test tube for medical research in laboratory

Germany, Bavaria, Munich, Scientist pouring red liquid with pipette in test tube for medical research in laboratory

Liquids in test tubes in lab

Petri dishes and test tubes in lab

Close-up of test tubes on table

Close-up of test tubes on table

Close-up of test tubes on table

Hand reaching for vial with green fluid,monitor with x-rays in foreground

Mid adult woman in laboratory, examining test tube

Mid adult woman in laboratory, examining test tube

Mid adult woman injecting liquid into test tube

Mid adult woman injecting liquid into test tube

Mid adult woman injecting liquid into test tube

Mid adult woman inserting test tube in laboratory

Mid adult woman inserting test tube in laboratory

Food research, conceptual image

Germany, Bavaria, Munich, Scientist with test tubes in laboratory

Germany, Bavaria, Munich, Scientist with test tubes in laboratory

Germany, Bavaria, Munich, Scientist with test tubes in laboratory

Male teacher helping girl student at microscope in laboratory classroom

Teacher and girl with test tubes