school education biological sample mature teacher look through magnifying glass tube lime small girl explore fruit |
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| navigate by keyword : microscopy analysis synthesis expand knowledge world biological sample mature teacher look through magnifying glass tube lime small girl explore fruit slice school microscope biology chemistry lab laboratory science future research expertise auditorium practice exercise dna catalyst gene life coats gas bottle structure elements testtube reagents student trial |
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| School education. biological sample. mature teacher look through magnifying glass tube on lime. small girl explore fruit slice. school. Black and white. Microscopy. Analysis and synthesis. expand knowledge of world. |
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