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Unformatted text preview: Total cell count o Demonstration: Prof. Schauer shows the class a counting chamber Grid etched on with a laser Two raised ridges glass coverslip fits directly over, allowing you to measure the space between the platform and the coverslip count through a microscope The same concept and method is used for bacterial, blood cells, environmental samples, etc. o Problems with this method: Not very precise Hard to see Doesnt distinguish live cells from dead ones Requires phase contrast microscope to count unstained cells Dilute samples must be concentrated...
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- Fall '09