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Flow cytometry is used to measure rates of ingestion of particles from dilute monodisperse suspensions by the ciliate Tetrahymena pyriformis. The particles used are polystyrene microspheres containing a fluorescent dye. Measurements were made directly, that is, by determining the fluorescence intensities from microspheres ingested by cells in samples(More)
by David Friesenhahn Af te r lengthy d e b a t e over whether o r not the city should award public works contracts to firms not based in Houston, the Houston City Council decided by a vote of 8-6 to hire the Boston engineering firm of Metcalf and Eddy to work on city water projects. Council passed two ordinances pertaining to water projects during its(More)
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