| abstract |
This chip (20) is equipped with micro flow channel units for hydro-dynamically classifying cells in a blood sample. In each of the micro flow channel units, a liquid flowing out from a sub flow channel into a main flow channel squeezes cells flowing through the main flow channel toward the side of a removal flow channel and a recovery flow channel. When a fluid containing non-nucleated red blood cells among the cells being squeezed enters the removal flow channel, the non-nucleated red blood cells are removed from the blood sample. Micro flow channel units having the same pattern are repeatedly stacked on one another in the height direction. In the respective micro flow channel units, main flow channel entrances (51), sub flow channel entrances (61), removal flow channel exits (54a), recovery flow channel exits (54d), and main flow channel exits (55) are respectively connected to columnar flow channels (22, 23, 24a, 24d and 25) that penetrate respective layers (L01-L10) in a cross-cutting manner, so as to be consolidated by the respective columnar flow channels (22, 23, 24a, 24d and 25). |