Table 4. Relative toxicity of paralytic shellfish toxins (PSTs)

Toxin	ReTx	Toxin	ReTx
STX	1.0000	GTX5	0.0644
NEO	0.9243	dcSTX	0.5131
GTX1	0.9940	dcGTX2	0.1538
GTX2	0.3592	dcGTX3	0.3766
GTX3	0.6379	C1	0.0060
GTX4	0.7261	C2	0.0963

STX, saxitoxin; GTX5, gonyautoxin-5; NEO, neosaxitoxin; dcSTX, decarbamoylsaxitoxin; GTX1, gonyautoxin-1; dcGTX2, decarbamoylgonyautoxin-2; GTX2, gonyautoxin-2; dcGTX3, decarbamoylgonyautoxin-3; GTX3, gonyautoxin-3; C1, N-sulfocarbamoylgonyautoxin-C1; GTX4, gonyautoxin-4; C2, N-sulfocarbamoylgonyautoxin-C2.