Should'nt it be Shiga like toxin. Thanksfinally had to go look this up, but remember this for all phage encoded toxins:
C - cholera antigen
O - o antigen of salmonella
B - Botulinum Toxin
E - Erythrogenic toxins of strep
D - Diptheria
S - Shiga toxin
When people share a bed, someone gets pregnant!!