male teacher white lab coat wears safety goggles wearing blue rubber gloves shelves various laboratory tools |
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| navigate by keyword : analysis analyzing asian bacteria biochemistry biology biotechnology chemical chemist chemistry clinic coat colorful concentration concept development dropper education equipment examining experiment investigation lab laboratory male man microbiology microscope observation occupation professional professor research researcher safety glasses science scientific scientist specimen student teacher technician technology test tube university working white wears goggles wearing blue rubber gloves shelves tools prepared flasks table classroom |
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| Male teacher in a white lab coat wears safety goggles wearing blue rubber gloves. Shelves of various laboratory tools prepared microscope and blue chemistry flasks on table in science classroom |
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