Table 1. Subclass distribution of S. japonicum tetraspanin 2 (Sj-TSP-2) in male and female worms.

Sj-TSP-2	Variable region*	Clones in
		Males	(%)	Females	(%)
Sj-TSP-2a	TGKK	16	(14.8)	0	(0)
Sj-TSP-2b	TGEK	0	(0)	0	(0)
Sj-TSP-2c	SKGR	27	(25)	9	(8.7)
Sj-TSP-2d	SRGP	32	(29.6)	36	(34.9)
Sj-TSP-2e	SSER	4	(3.7)	24	(23.3)
Sj-TSP-2f	TVRT	13	(12)	11	(10.7)
Sj-TSP-2g	TVRT‡	0	(0)	0	(0)
Sj-TSP-2h†	SKER	12	(11.1)	8	(7.8)
Sj-TSP-2i†	FERR	4	(3.7)	15	(14.6)
Total	-	108	-	103	-

*, The variable region of the Sj-TSP-2 protein sequence from amino acid 155 to 158 of the full-length sequences.

†: , Two previously undescribed sequences;

‡: , same as Sj-TSP-2f in the variable region, which Cai et al. [8] suggested was a different subclass as it contains substitutions in other regions.