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Cloaking device: Yeast cells were coated with a uniformly thin (about 100 nm) and continuous layer of biocompatible silica through a layer-by-layer chemical modification approach (see picture). Such a silica nanoshell forms an extracellular shield that endows these cells with enhanced defense against high temperature without significantly compromising cell viability.
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Wang et al. (2010) studied this question.
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