malignant

Osaka Metropolitan University researchers have found that exosomes, a type of small vesicle, produced by cancer-associated fibroblasts (CAFs) play an important role in the progression of skin cancer, and assessing them could be a useful prognostic factor of malignant melanoma. Credit: Naho Fujii, Osaka Metropolitan UniversityMalignant melanoma is a relatively aggressive type of skin cancer. When detected early, it is usually treatable by surgical resection only, but metastases develop often spreading to distant areas.…

Over the weekend, when Kee Park saw the latest figures on what North Korea calls a “malignant fever” sweeping the country, he realized how dark the outlook had become. New cases of the illness—almost certainly COVID-19, caused by the Omicron variant of SARS-CoV-2—appear to be doubling every 2 days in the last significant population in the world, some 25 million people, that has no immunity to the disease from vaccination or infection. “The outbreak is now nationwide,” says Park, a…