Colleen A Dalton

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A Nycodenz gradient technique is described which permits the separation of functionally active polymorphonuclear neutrophils (PMN) from the peripheral blood of rats. PMN are obtained at greater than 90% purity and fractionate at a peak density of 1.0919 g/ml. The method is suitable for isolating PMN when the circulating PMN count is low (less than 20%) as(More)
The temperature and composition of Earth's mantle control fundamental planetary properties, including the vigor of mantle convection and the depths of the ocean basins. Seismic wave velocities, ocean ridge depths, and the composition of mid-ocean ridge basalts can all be used to determine variations in mantle temperature and composition, yet are typically(More)
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