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癌细胞如何穿过身体之谜
Science
The Mystery of How Cancer Cells Barrel Through Your Body
In 1995, while he was a graduate student at McGill University in Montreal, the biomedical scientist Peter Friedl saw something so startling it kept him awake for several nights. Coordinated groups of cancer cells he was growing in his adviser’s lab started moving through a network of fibers meant to mimic the spaces between cells in the human body. For more than a century, scientists had known that individual cancer cells can metastasize, leaving a tumor and migrating through the bloodstream and lymph system to distant parts of the body. But no one had seen what Friedl had caught in his microscope: a phalanx of cancer cells moving as one. It was so new and strange that at first he had trouble
Wired News
出生的婴儿如何带有寨卡病毒之谜
Health
Baby born with Zika virus is medical mystery
MIAMI -- Eight-week-old Micaela was exposed to the Zika virus in the womb, but does not have microcephaly, the birth defect marked by an abnormally small head and brain. “She looks normal to me, but the doctors say she’s not,” said her mother, Maria Fernanda Ramirez Bolivar. Ramirez Bolivar contracted the Zika virus in her native Venezuela when she was three months pregnant. Micaela has slight damage to one eye and stiffness on one side of her body. It took a team of doctors at the University of Miami several weeks to rule out other causes. Dr. Ivan Gonzalez is part of a her medical team, and said ultrasounds Ramirez Bolivar had in Venezuela and Miami all looked normal. Gonzalez said scans
CBS News
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