Gastrulation is considered a fundamental process of metazoan embryogenesis, as the layers that give place to all body parts are laid down by extensive cell movements and differentiation. It commonly thought gastrulation establishes entire axis. The discovery neuromesodermal progenitors challenging this view. These cells keep their pluripotency after they able differentiate into ectoderm (neural...

one of the disadvantages of conventional milling tools is to produce a large amount of heat in cutting zone and so making the tool warmer. as a result, the tool would be worn and its life time would be reduced. therefore, in long time machining, it is essential to change inserts and tools, continiously. a milling tool with self rotary cutting inserts was designed and manufactured that enables i...