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Retrotech: laser
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Retrotech: IMG_6840
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Retrotech: IMG_6811
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Retrotech: IMG_6807
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Retrotech: IMG_6801
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Retrotech: IMG_6799
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Retrotech: IMG_6775
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Retrotech: IMG_6771
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Retrotech: IMG_6770
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Retrotech: IMG_6750
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Retrotech: IMG_6747
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Retrotech: marker dye laser
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Retrotech: marker dye laser
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Retrotech: marker
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Retrotech: Yellow Marker
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Retrotech: IMG_1029
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Retrotech: Dye laser using dye from inside yellow fluorescent marker
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Retrotech: marker
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Retrotech: marker
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Retrotech: laser
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Retrotech: laser
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Retrotech: laser
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Retrotech: IMG_1410
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Retrotech: IMG_1411
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Retrotech: IMG_1412
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Retrotech: IMG_1414
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Retrotech: IMG_1413
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Retrotech: yellow markers
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Retrotech: IMG_1233
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Retrotech: cover slip laser -- better focus, but spot not as bright