An apparatus and a method for providing a conference call service in a portable terminal are provided. The present invention further provides a diagnostic kit for detecting markers derived from a disease or clinical samples. The array can be straightened, and held in a straight configuration by inserting a stylet into the lumen. At least a first gaming machine enables play of a first base game that has a first theoretical payout percentage, and at least a second gaming machine enables play of a second base game that has a second theoretical payout percentage.