FIG. 3.

Comparison of serogroup and hup phenotype between normal and HRS isolates of B. japonicum from three field sites. The field isolates tested were as follows: the isolates from Nagakura were NK2, NK8, NK13, NK14, NK15, NK21, NK23, NK26, NK28a, NK32, NK35, NK4*, NK5*, NK6*, NK9*, NK10*, NK16*, NK18*, NK29*, NK25*, NK28b*, NK34*, NK37*, and NK40*, and the isolates from Tokachi were T7, T8, T9, T10a, T10b, T12, T29, T39, T40, T2*, T15*, T22*, T25*, and T31*, where an asterisk indicates an HRS isolate. Isolates NC4a NC6a, NC41a, NC3a*, and NC32a* from the Nakazawa field, which had not shown clear agglutination reactions previously, were tested again by using a relatively large amount of fresh cells. For other B. japonicum isolates from the Nakazawa field, previous data of serogroup and the Hup phenotype (22) were used.