This Chandra image of the Tycho supernova remnant contains new evidence for what triggered the original supernova explosion. Credit: NASA/CXC/Chinese Academy of Sciences/F. Lu et al. At one time or another, all science enthusiasts have heard the late Carl Sagan’s infamous words: “We are ...
The stromal-derived factor (SDF)-1(alpha) and the CXC receptor (CXCR)-4 jointly regulate the trafficking of various cell types and play a pivotal role in the migration of hematopoetic cells. A fundamental role of CXCR4 in metastatic spreading has also been suggested for a variety of ...