Científico profesional en bata de laboratorio, de pie en el laboratorio, mirando a la cámara y sonriendo - Foto e imágenes de stock

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Smiling medical worker in laboratory, sitting with arms crossed and looking at camera while his colleagues are working behind

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Smiling medical worker in laboratory, sitting with arms crossed and looking at camera while his colleagues are working behind

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Handsome teacher of chemistry working in laboratory

Handsome teacher of chemistry working in laboratory

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