Table 1. Larvicidal activity of S-layers and spores from 2362 and C7 strains against Culex sp and Aedes aegypti larvae.

	Culex sp.	Aedes aegypti
S-layers from	LC50 (µg/ml)	LC50 (µg/ml)
2362	2.2 (0.2)	>80
C7	2.0 (0.2)	8.0 (0.5)
Spores from	LC50 (cfu/ml)	LC50 (cfu/ml)
2362	1.00×103 (0.02×103)	1.20×106 (0.06×106)
C7	0.50×103 (0.02×103)	5.00×104 (0.25×104)

S-layer and spores preparations were added with 20 Culex sp. or Aedes aegypti larvae as indicated in Material and Methods. After 48 h lethality was evaluated. Assays were performed with duplicate and repeated three times and a representative experiment is shown. In parenthesis, standard deviation.