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Breast cancer cells ‘stick together’ to spread through the body during metastasis

September 19, 2019 dna 0
Researchers have discovered that a cell adhesion protein, E-cadherin, allows breast cancer cells to survive as they travel through the body and form new tumors, a process termed metastasis. Their conclusions, obtained through laboratory experiments and in mouse models, help explain how metastasis works in the most common form of breast cancer, invasive ductal carcinoma. E-cadherin appears to limit molecular stresses within the cancer cells and allow them to survive long enough to form new tumors.
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What the noggin of modern humans’ ancestor would have looked like

September 19, 2019 dna 0
Despite having lived about 300,000 years ago, the oldest ancestor of all members of our species had a surprisingly modern skull — as suggested by a new model. After comparing the virtually rendered skull to five African fossil specimens contemporaneous with the first appearance of Homo sapiens, the two researchers posit that our species emerged through interbreeding of South and East African populations.