young caucasian man scientist pouring liquid test tube laboratory |
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| navigate by keyword : young caucasian man male guy person adult handsome attractive face happy confident smiling science research medicine scientist experiment technology medical microscope chemist biology analysis work worker working test tube table standing measuring measure measurement liquid tubes glasses security safety pouring clinic center hospital room indoor indoors lab laboratory pharmacy chemistry |
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| Young caucasian man scientist pouring liquid on test tube at laboratory |
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