Consumption of blue-green algae, or extracts thereof, enhances trafficking or homing of stem cells in animals by inducing a transient increase in the population of stem cells present in the animal’s circulatory system. The system includes a thermal source configured to generate an incident thermal wave that propagates through a medium and is provided onto the material at an incident angle. In the present invention, the plurality of handles 13 of different kinds may be constantly fixed to the resistance part 14 as in or may be adapted to be replaceable as appropriate through an attaching and removing mechanism.