Turning biological cells to stone improves cancer, stem cell research

Near-perfect replications of human and animal cells enables improved study of certain cancers and stem cells, as well as the creation of complex durable objects without machinery, scientists report. A new technique to transmute living cells into more permanent materials that defy decay and can endure high-powered probes is widening research opportunities for biologists who are developing cancer treatments, tracking stem cell evolution or even trying to understand how spiders vary the quality of the silk they spin.

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