middle age grey haired man wearing scientist uniform holding syringe and apple laboratory |
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| navigate by keyword : senior middle age adut elderly man male person caucasian mature greyhaired expression enjoy science research medicine scientist experiment technology medical chemistry microscope chemist biology analysis worker working mask covid coronavirus covid19 syringe injection apple fruit nutrition additive modification fertilizer food clinic center hospital room indoor indoors interior lab laboratory |
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| Middle age grey-haired man wearing scientist uniform holding syringe and apple at laboratory |
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