Medicine professional making research experimental substance in laboratory close up. Involved scientist man filling test tube using pipette
Confident proud smart man in his 30s or 40s pointing at himself acknowledging his achievement at a job well done solving a complex problem
The face of the thinking person in glasses. evening night time
Serious computer scientist working in data center closeup. Pensive system administrator man holding ball creating ideas at late workplace
Paranoid alien conspiracy theorist on phone
Pensive agronomist studying plant genetics in sunflower field
WWII scientist working on the Enigma code machine
WWII scientist taking measurements on the Enigma machine
Intelligent young person solving problems in front of a chalkboard
Exhausted chemistry student staying up all night working on his final project
The person in glasses thinking. evening night time
Intelligent doctor analyzing medication efficiency and side effects indoors
Rear view of man against chalkboard with math formula equations. He think about solution and try to understand high university task.
Serious chemist thinking on research cure wearing safety in lab close up. Thoughtful scientist looking test tube exploring medicines
Scientist in lab. Scientist looking at chemical liquid in research laboratory. Scientist working in laboratory with chemical reagents. Lab man carrying out scientific research in lab. Scientist lab
Thoughtful african american female crop scientist in white coat and spectacles examining plant condition and crop quality, writing data into clipboard during inspection in sunflower agricultural field
Confused red-haired student solving math problem at college. Achievement and difficulties concept.
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Close-Up of Technician Deep in Thought in Laboratory Environment
Brilliant, smart man laughing, smiling and giving two thumbs up like he is endorsing or recommending something while looking directly at the camera
vintage scientist looking and studying a bottle of radium
vintage scientist looking and studying a bottle of radium glow
Portrait of a Thoughtful Expert Examining Vaccine Ampoules
Funny brain cartoon thinking High Definition animation colorful scenes
Portrait of a thinking doctor or scientist in a laboratory, close-up. Doctor makes a decision
Scientist using digital tablet in office 4k
Talented student studying chemistry and writing molecular formulas on glass wall
Portrait of scientist thinking in lab. Close up of serious scientist in laboratory. Laboratory worker thinking. Chemist thinking. Lab worker with serious expression of face. Scientist face
scientist reading and thinking about notes he has on a pad
Restless African American man sitting in hospital analyzing diagnosis. Medium shot portrait of serious concentrated professional doctor thinking sitting at table indoors. Medicine concept.
Laboratory technician mixes the reagent with liquid in flasks. Research of medicinal properties of plants. Natural cosmetics production
Pensive lab specialist working in genetics clinic closeup. Thoughtful man scientist looking in microscope thinking on scientific solutions.
Portrait of a Female Health Professional Working with a Microscope
Puzzled woman doctor or nurse thinking over blue background over blue background
Scientist at work in laboratory. Young researcher deep in thought. Portrait of lab worker in safety glasses. Chemist conducting experiments. Closeup of lab professional in white coat.
The face of the serious man in glasses. evening night time
Thoughtful man in laboratory contemplating on promotion of 3-D technologies into medical researches and practices.
Doctor or scientist thinks about a problem and finds a solution, close-up
Scientist pondering in science lab. Scientist in lab. Scientist observing lab equipment. Young scientist awaiting research outcomes.
Over the shoulder view of middle aged male physician in uniform working on laptop pc, analyzing MRI brain scan of sick patient, thinking about diagnosis and cause of disease at medical office.
Scientist checking pH of liquid - wide shot, close up
Young doctor analyzing medical results at computer and taking notes
Medical researcher developing project in modern clinical laboratory closeup. Serious woman scientist making notes biochemistry research.
Young man solving math problem on whiteboard. Male student smiling while solving algebra equation at classroom. Education concept.
Scientist remove glasses from face. Scientist looking at glasses. Man holds glasses in hands. Portrait of lab man thinking in laboratory. Scientist in lab. Researcher thinking. Closeup lab worker
Young Latin woman scientist ponders problem at library
Young student solving a complex math problem on a blackboard in slow motion
Closeup skilled scientist looking at test tube with medical preparation in lab. Young thoughtful researcher in safety checking drugs