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Iron-coated sperm micromotors attack gynecological cancer

“Ironman” just took on a whole new meaning. German scientists have designed a new method to use iron-coated sperm as a drug delivery system for gynecological cancer, according to MIT Technology Review. Scientists first douse bull sperm in the common cancer chemotherapy drug Doxorubicin, which they readily absorb, and then coax the sperm into tiny, laser-printed, iron-coated harnesses. Next, using magnets, they guide the sperm “micromotors” into tumor cell spheroids growing in a dish, they report on the preprint server arXiv. The micromotors aren’t ready for use in humans yet—obvious problems include avoiding unintended pregnancies—but the researchers hope to move the system into clinical use in the “near future.”

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