Detection system, detection apparatus, and detection method

A detection system comprising:

• a detection device including a space, defined by a wall surface, into which a liquid containing a biomolecular label and a liquid containing magnetic beads are introduced and a magnetic sensor having a surface forming a portion of the wall surface, wherein at least some of the magnetic beads bind to the biomolecular label immobilized on the surface of the magnetic sensor or to a molecule near the biomolecular label immobilized on the surface of the magnetic sensor;
• and
• a first magnetic-field applying mechanism that applies a magnetic field in a direction in which the magnetic beads are moved away from the surface of the magnetic sensor.

A detection apparatus comprising:

• an insertion section into which a detection device is inserted, the detection device including a space, defined by a wall surface, into which a liquid containing magnetic beads is introduced and a magnetic sensor having a surface, forming a portion of the wall surface, onto which a biomolecular label is immobilized, wherein at least some of the magnetic beads bind to the biomolecular label or to a molecule near the biomolecular label;
• and
• a first magnetic-field applying mechanism that applies a magnetic field in a direction in which the magnetic beads are moved away from the surface of the magnetic sensor.

A detection apparatus comprising:

• an insertion section into which a detection device is inserted, the detection device including a space, defined by a wall surface, into which a liquid containing a biomolecular label and a liquid containing magnetic beads are introduced and a magnetic sensor having a surface forming a portion of the wall surface, wherein at least some of the magnetic beads bind to the biomolecular label immobilized on the surface of the magnetic sensor or to a molecule near the biomolecular label immobilized on the surface of the magnetic sensor;
• and
• a first magnetic-field applying mechanism that applies a magnetic field in a direction in which the magnetic beads are moved away from the surface of the magnetic sensor.

A detection method comprising bringing a liquid containing a biomolecular label into contact with a surface of a magnetic sensor to immobilize the biomolecular label onto the surface of the magnetic sensor;

• bringing a liquid containing magnetic beads into contact with the surface of the magnetic sensor to bind at least some of the magnetic beads to the biomolecular label immobilized on the surface of the magnetic sensor or to a molecule near the biomolecular label immobilized on the surface of the magnetic sensor;
• applying a magnetic field in a direction in which the magnetic beads are moved away from the surface of the magnetic sensor;
• and then performing magnetic detection using the magnetic sensor.