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首页> 美国政府科技报告 >Surface Extensions of 3T3 Cells Towards Distant Infrared Light Sources
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Surface Extensions of 3T3 Cells Towards Distant Infrared Light Sources

机译：3T3电池向远距离红外光源的表面延伸

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Using a specially designed phase-contrast light microscope with an infrared spotilluminator we found that approximately 25% of 3T3 cells were able to extend pseudopodia towards single microscopic infrared light sources nearby. If the cells were offered a pair of such light sources next to each other, 47% of the cells extended towards them. In the latter case 30% of the responding cells extended separate pseudopodia towards each individual light source of a pair. The strongest responses were observed if the infrared light sources emitted light of wavelengths in the range of 800-900 nm intermittently at rates of 30-60 pulses per min. The temperature increases of the irradiated spots can be shown to be negligible. The results suggest that the cells are able to sense specific infrared wavelengths and to determine the direction of individual sources.

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