FILTER CHIP, METHOD FOR OBSERVING FLOW CHARACTERISTICS OF CELLS AND PARTICLES USING THE CELLS

PROBLEM TO BE SOLVED: To provide a filter chip used for observing the shapes of cells and/or floating particles, contained in a sample liquid passing through a fine processed flow channel provided to a substrate under suction pressure or pressure and is capable of clearing the shapes of the cells and/or floating particles small in shadow in the fine processed flow channel and passing through this flow channel and reducing the destruction of cells or the like. SOLUTION: This filter chip has a difference between the upper and lower widths of the cross section, in the direction of crossing the fine flow channel of the protruded part of the fine flow channel is about 4 μm or smaller and has no acute angle shape in the surface opposite to the flow of the sample liquid. COPYRIGHT: (C)2005,JPO&NCIPI