sentences:  The column traps the erythrocytes infected with the latest stages of the parasites, which can then be eluted when the column is removed from the magnet.It is a simple method that does not need expensive equipment and it does not seem to affect the parasites as to their invasion capabilities afterwards.• Doolan, D. L. (Editor) (2002) "Malaria Methods and Protocols (Methods in Molecular Medicine) ", Totowa, NJ