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. Author manuscript; available in PMC: 2011 Jan 1.
Published in final edited form as: Lab Chip. 2010 Oct 14;11(1):147–151. doi: 10.1039/c0lc00149j

Figure 4.

Figure 4

The self-assembled magnetic filter was demonstrated by filtering a population of leukocytes from tumor cells. (a) shows flow cytometer data of the suspension before filtering and (b) shows it after. The leukocytes were stained green and the tagged with magnetic beads. The tumor cells were stained with a CMPTX red dye. (c) The filter achieves a very high enrichment and recovery ratio, enhancing the population of tumor cells to leukocytes by a factor of >103 while retaining ~90% of the tumor cells. The enrichment and recovery ratio are shown to depend on flow rate.