| 摘要 |
In a cell detecting part ( 2 ), and end face ( 13 a) of a cantilever ( 13 ) is previously surface treated so that a detecting nucleotide chain D can be fixed thereto. In a reaction area ( 10 ), and electric field is generated by a cathode ( 11 ) and an anode ( 12 ). A target nucleotide chain T dripped from a nozzle ( 3 ) moves to the end face ( 13 a) while the target nucleotide chain T is stretched. When the detecting nucleotide chain D and the target nucleotide chain T are hybridized, the mass of the cantilever ( 13 ) is increased to lower a natural frequency. Thus, ac voltage is applied to the cantilever ( 13 ) to measure the change of the natural frequency. Thus, whether or not there is the hybridization is detected and the number of the hybridized target nucleotide chains T is quantitatively detected. |
