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
Pensive agronomist studying plant genetics in sunflower field
Serious computer scientist working in data center closeup. Pensive system administrator man holding ball creating ideas at late workplace
The face of the thinking person in glasses. evening night time
Paranoid alien conspiracy theorist on phone
Intelligent young person solving problems in front of a chalkboard
Exhausted chemistry student staying up all night working on his final project
WWII scientist taking measurements on the Enigma machine
WWII scientist working on the Enigma code machine
Young Asian woman in lab coat writing research details in laboratory
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
Experienced male doctor middle-aged with gray beard and hair wearing white gown working with microscope and laptop in the medical 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
vintage scientist looking and studying a bottle of radium glow
Funny brain cartoon thinking High Definition animation colorful scenes
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
Confused red-haired student solving math problem at college. Achievement and difficulties concept.
Portrait of a Thoughtful Expert Examining Vaccine Ampoules
Pensive lab specialist working in genetics clinic closeup. Thoughtful man scientist looking in microscope thinking on scientific solutions.
vintage scientist looking and studying a bottle of radium
Laboratory technician mixes the reagent with liquid in flasks. Research of medicinal properties of plants. Natural cosmetics production
scientist reading and thinking about notes he has on a pad
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Close-Up of Technician Deep in Thought in Laboratory Environment
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 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.
Restless African American man sitting in hospital analyzing diagnosis. Medium shot portrait of serious concentrated professional doctor thinking sitting at table indoors. Medicine concept.
Portrait of Young Female Teacher in University Classroom, Working on a Table In Front of Blackboard with Mathematic Formulas. Science Student Studying in College Library Looking at Camera and Smiling
Thoughtful man in laboratory contemplating on promotion of 3-D technologies into medical researches and practices.
Medical researcher developing project in modern clinical laboratory closeup. Serious woman scientist making notes biochemistry research.
Doctor or scientist thinks about a problem and finds a solution, close-up
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.
Puzzled woman doctor or nurse thinking over blue background over blue background
Young doctor analyzing medical results at computer and taking notes
Scientist pondering in science lab. Scientist in lab. Scientist observing lab equipment. Young scientist awaiting research outcomes.
The face of the serious man in glasses. evening night time
Young man solving math problem on whiteboard. Male student smiling while solving algebra equation at classroom. Education concept.
Closeup skilled scientist looking at test tube with medical preparation in lab. Young thoughtful researcher in safety checking drugs
Young student solving a complex math problem on a blackboard in slow motion
Scientist checking pH of liquid - wide shot, close up
Woman scientist working at a laboratory bench, using equipment and checking data from a sheet.
Curious student pondering chemical formula and seeking solutions
Young Latin woman scientist ponders problem at library