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- Building with moon rocks: Working on the moon with lunar soil and grit could prove easier, more efficient and less costly than using earthly materials
- Major twister hits Oklahoma: Its speed, which largely determines the damage it causes, is still unknown
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Biased cells
View larger version | After single cell transplantation, two types of mouse blood stem cells (color on cells indicates different protein markers) produced different proportions of red blood cell precursors and T and B cells. (Examples from four transplants are shown.)
Credit: G. Challen, Margaret Goodell
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