on the international space station july , in space, space rounding out a series of four spacewalks, nasa astronauts bob behnken (left) and chris cassidy have completed an upgrade of the space station's power systems. new batteries on the orbital complex will offer twice as much power at half the size...
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ores to foreign countries. with over years of experience in mining, fiza group is pioneer in the indian mining industry. the group is known for unmatrched quality and high standards in mining of iron and manganese ore. fiza group offers extensive range of services that covers exploration,plant design...
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t cells are an important component of the body's immune system. as erika pearce explains, there are several types of t cells which form consecutively during the immune response and serve different purposes. effector t cells combat pathogens from infections or tumors while memory t cells provide protective...