https://cvvr.hms.harvard.edu/publication/antigenicity-and-immunogenicity-of-rv144-vaccine-aidsvax-clade-e-envelope-immunogen-is-enhanced-by-a-gp120-n-terminal-deletion/
Antigenicity and Immunogenicity of RV144 Vaccine AIDSVAX Clade E Envelope Immunogen Is Enhanced by...