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Live imaging techniques have given Spanish researchers deeper insight into the development of the embryonic heart in mice. Their live analysis reveals the coordination that occurs between cardiac progenitor cells 鈥?cells that, similar to stem cells, can change into another specific type of cell 鈥?during heart development. They found that progenitor cells go through alternate phases of changing into cardiac muscle (differentiation) to help initiate early heart function, and helping the heart tube to take on its shape (morphogenesis).鈥淧revious studies have shown that two populations of progenitor cells are involved in vertebrate heart development: first heart field (FHF) cells and second heart field (SHF) cells,鈥?explains l chanclas yeezy ead author Kenzo Ivanovitch, postdoctoral researcher at the Spanish National Cardiovascular Research Center (CNIC). 鈥淔HFs are recruited early in yeezy 350 d converse plateau evelopment to form the initial shape of the heart tube, and SHFs are brought in later to extend the length of the tube. How RIO DE JAN uggs EIRO:Brazil is on the sidelines of today's wars, but at a Rio defense fair this week the South American gentle giant eagerly sought to sell weapons to anyone else who may need to fight.Brazilian companies account for 150 of the roughly 650 brands on display at the LAAD defense industry exhibition in Rio de Janeiro, ranging from cargo planes to tracer bullets.US approves sale of night vision military system to PakistanThey're the standard bearers of an industry estimated to be worth around 2 nb 530 00 billion reais ($64 billion) a year, or 3.7 percent of gross domestic product -- and which center-right President Michel Temer wants to grow.At Brazilian gun manufacturer Taurus's stand on Wednesday, thickset men flocked to inspect the latest assault rifle, taking turns to new balance 996 aim the sleek, black weapon at imaginary targets.Visitors in camouflage uniforms handled the bullet-proof vests at Glagio do Brasil, while the curious clambered onto a speedboat bristling with automatic guns built by Br