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    Female paramedic using portable defibrillator while CPR training outdoors. — Stock Photo
    Female paramedic using portable defibrillator while CPR training outdoors.
    Man giving presentation on projection screen — Stock Photo
    Man giving presentation on projection screen
    Female anatomy showing orange colored liver, computer illustration. — Stock Photo
    Female anatomy showing orange colored liver, computer illustration.
    Female professor and college students using computer in computer lab — Stock Photo
    Female professor and college students using computer in computer lab
    College students conducting scientific experiment in science laboratory classroom — Stock Photo
    College students conducting scientific experiment in science laboratory classroom
    Side view of male student in casual clothes and eyeglasses with modern netbook in hand walking on street near modern building — Stock Photo
    Side view of male student in casual clothes and eyeglasses with modern netbook in hand walking on street near modern building
    Artificial intelligence, conceptual illustration. — Stock Photo
    Artificial intelligence, conceptual illustration.
    Schoolkids studying in the classroom at school — Stock Photo
    Schoolkids studying in the classroom at school
    College students conducting scientific experiment in science laboratory classroom — Stock Photo
    College students conducting scientific experiment in science laboratory classroom
    Young woman with books — Stock Photo
    Young woman with books
    Blonde cute boy playing with waldorf rainbow puzzle — Stock Photo
    Blonde cute boy playing with waldorf rainbow puzzle
    Sitting in chair female silhouette with arm pain, digital illustration. — Stock Photo
    Sitting in chair female silhouette with arm pain, digital illustration.
    Elevated view of lone female student writing their GCSE exam in classroom — Stock Photo
    Elevated view of lone female student writing their GCSE exam in classroom
    Transparent male silhouette with colored kidneys, computer illustration. — Stock Photo
    Transparent male silhouette with colored kidneys, computer illustration.
    Serious mother and kids spending time together using gadgets on sofa at home — Stock Photo
    Serious mother and kids spending time together using gadgets on sofa at home
    Illustration of human organs in body silhouette. — Stock Photo
    Illustration of human organs in body silhouette.
    Male skeleton part with visible atlas vertebrae, computer illustration. — Stock Photo
    Male skeleton part with visible atlas vertebrae, computer illustration.
    Male silhouette with arm pain, digital illustration. — Stock Photo
    Male silhouette with arm pain, digital illustration.
    Abstract female shoulder bones, computer illustration. — Stock Photo
    Abstract female shoulder bones, computer illustration.
    Grandmother and Child Taking a Selfie at home — Stock Photo
    Grandmother and Child Taking a Selfie at home
    Young girl playing on preschool tablet — Stock Photo
    Young girl playing on preschool tablet
    Audience with smart phones videoing conference — Stock Photo
    Audience with smart phones videoing conference
    Thoughtful schoolboy in casual wear and wireless headphones enjoying music and drawing with pencils while spending free time in bedroom — Stock Photo
    Thoughtful schoolboy in casual wear and wireless headphones enjoying music and drawing with pencils while spending free time in bedroom
    Daughter reading book — Stock Photo
    Daughter reading book
    Smiling businessman reading book and looking away — Stock Photo
    Smiling businessman reading book and looking away
    6 year old boy playing violin outside of his home — Stock Photo
    6 year old boy playing violin outside of his home
    Portrait confident young male college student in library — Stock Photo
    Portrait confident young male college student in library
    Portrait of a girl reading in a christmas santa hat — Stock Photo
    Portrait of a girl reading in a christmas santa hat
    Illustration of beautiful Jupiter planet in dark space. — Stock Photo
    Illustration of beautiful Jupiter planet in dark space.
    Portrait of a girl lying on her bed doing her homework — Stock Photo
    Portrait of a girl lying on her bed doing her homework
    Portrait of serious boy — Stock Photo
    Portrait of serious boy
    Young man reading book — Stock Photo
    Young man reading book
    Illustration of shoulder bones in human skeleton. — Stock Photo
    Illustration of shoulder bones in human skeleton.
    Side view of positive schoolboy in casual wear and wireless headphones drawing with pencils while spending free time in bedroom — Stock Photo
    Side view of positive schoolboy in casual wear and wireless headphones drawing with pencils while spending free time in bedroom
    Grandfather and grandson over chessboard — Stock Photo
    Grandfather and grandson over chessboard
    Smiling teenage girl with headphones using laptop in living room — Stock Photo
    Smiling teenage girl with headphones using laptop in living room
    Student writing formula and equations — Stock Photo
    Student writing formula and equations
    Side view of schoolgirl in fluffy skirt sitting at synthesizer and preparing for music class looking at camera — Stock Photo
    Side view of schoolgirl in fluffy skirt sitting at synthesizer and preparing for music class looking at camera
    Front view close up of a Caucasian teenage girl sitting at a desk in a school classroom writing in a notebook, with classmates sitting at desks working in the background — Stock Photo
    Front view close up of a Caucasian teenage girl sitting at a desk in a school classroom writing in a notebook, with classmates sitting at desks working in the background
    Abstract male silhouette with visible lumbar spine, computer illustration. — Stock Photo
    Abstract male silhouette with visible lumbar spine, computer illustration.
    Transparent male silhouette with colored lumbar spine, computer illustration. — Stock Photo
    Transparent male silhouette with colored lumbar spine, computer illustration.
    Young woman holding mobile phone — Stock Photo
    Young woman holding mobile phone
    Portrait of Caucasian female conservation volunteer cleaning up forest in the countryside, holding rubbish bag. Ecology and social responsibility in rural environment. — Stock Photo
    Portrait of Caucasian female conservation volunteer cleaning up forest in the countryside, holding rubbish bag. Ecology and social responsibility in rural environment.
    Teenage musicians recording music, singing and playing drums in sound booth — Stock Photo
    Teenage musicians recording music, singing and playing drums in sound booth
    Crop unrecognizable student holding denture and a pencil while sitting at table during dentistry class — Stock Photo
    Crop unrecognizable student holding denture and a pencil while sitting at table during dentistry class
    Young female scientist doing test in laboratory, male scientist standing in background in laboratory. — Stock Photo
    Young female scientist doing test in laboratory, male scientist standing in background in laboratory.
    Friends reading book together — Stock Photo
    Friends reading book together
    Chinese girl helping brother studying at table — Stock Photo
    Chinese girl helping brother studying at table
    Curious students watching chemical reaction, conducting scientific experiment in laboratory classroom — Stock Photo
    Curious students watching chemical reaction, conducting scientific experiment in laboratory classroom
    Young boy at home looking at a laptop screen, and writing in a notebook. — Stock Photo
    Young boy at home looking at a laptop screen, and writing in a notebook.
    Young woman texting with cell phone in kitchen — Stock Photo
    Young woman texting with cell phone in kitchen
    Smiling female university students studying at desk in classroom — Stock Photo
    Smiling female university students studying at desk in classroom
    Rural chinese female teacher and pupils smiling at camera in the classroom — Stock Photo
    Rural chinese female teacher and pupils smiling at camera in the classroom
    Students studying in the class at school — Stock Photo
    Students studying in the class at school
    Cropped unrecognizable female in stylish clothes sitting with opened book on wooden bench against building with light wall in daytime — Stock Photo
    Cropped unrecognizable female in stylish clothes sitting with opened book on wooden bench against building with light wall in daytime
    Children sharing a laptop computer. — Stock Photo
    Children sharing a laptop computer.
    Front view of a teenage mixed-race boy in a school classroom sitting at desk, concentrating and reading, with teenage male and female classmates sitting at desks working around him — Stock Photo
    Front view of a teenage mixed-race boy in a school classroom sitting at desk, concentrating and reading, with teenage male and female classmates sitting at desks working around him
    Young college students studying together in classroom — Stock Photo
    Young college students studying together in classroom
    Portrait confident young male college student studying at cafe table — Stock Photo
    Portrait confident young male college student studying at cafe table
    Male colleagues browsing netbook and working on project remotely while sitting on lawn in park — Stock Photo
    Male colleagues browsing netbook and working on project remotely while sitting on lawn in park