ゴム手袋。左手でカメラを見ながら試験管に滴下試薬の肯定的な科学者ホールディング ピペット - ストックフォト&画像
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yacobchuk1Fascinating moment. Very attentive researcher bowing his head and keeping mouth opened while mixing two different chemical agents
Add it here. Pleasant concentrated lab worker making an experiment
Take this liquid. Serious researcher bowing head while looking at test-tube and leaning elbows on the table
Take sample. Attentive young man wearing rubber gloves while working in laboratory
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