Table 1. Summary of binding and oligomerization of Cry1Ac and Cry1AcMod incubated with BBMV from susceptible and resistant P. gossypiella.

Insect strain	Toxin					Toxicity [28]
APHIS-S	Cry1Ac	+	++	++	++	+++
AZP-R	Cry1Ac	+	+	+	+	-
APHIS-S	Cry1AcMod	+	NA a	-	++	++
AZP-R	Cry1AcMod	+	NA a	-	++	++

^a NA, data not available; previous results show Cry1AcMod protoxin formed oligomers without BBMV or cadherin [31].