However , some are reclassified into cupiennins group of toxin , including CSTX - 3 , - 4 , - 5 , and - 6 , because of their chemical affinity .
There are twenty types so far described for this protein group .
Some are reclassified into cupiennins group of toxin , including CSTX - 3 , - 4 , - 5 , and - 6 , because of their chemical affinity .
There are twenty types so far described for this protein group .