Low-Dose Exposure and Immunogenicity of Transgenic Maize Expressing the Escherichia coli Heat-Labile Toxin B Subunit
April J. Beyer, Kan Wang, Amber N. Umble, Jeffrey D. Wolt, and Joan E. Cunnick
Environ Health Perspect. 2007 March; 115(3): 354–360. Published online 2006 December 19. doi: 10.1289/ehp.9687.PMCID: PMC1849932