The loop segments within LAMP products, i.e., sequences complementary to sequences between either F1 and F2 or B1 and B2, were used as probes for detection, as shown in Fig. 1 . The probes were designed such that the sequences between F1c or B1c and F2c or B2c had a melting temperature (Tm) of 1 to 5°C lower than LAMP reaction temperature (62°C). All fluorescently labeled oligo DNA probes, which were HPLC purification grade, were purchased from Sigma Genosis Japan KK. The sequences of the probe used were as follows. The numbers in parentheses indicate the length and melting temperature (Tm) from supplier's information. 