| abstract |
A DNA chip includes a large number of minute spots formed by dripping sample solutions onto a base plate. The base plate is provided with positional deviation-correcting means for displacing the spots and automatically correcting any positional deviation of each of the spots. The positional deviation-correcting means includes any one of at least one projection, at least one recess and electric field-generating means for providing charged states on the base plate centered at a correct position for each of the spots supplied on the base plate. |