Figure 2. Pre-Treatment Mean PA levels in Sera from Study 2 Rabbits.
New Zealand white rabbits were exposed to 200×LD50 doses of aerosolized B. anthracis spores and serum collected at different time points was tested by electro-chemiluminiscence (ECL) assay for detection and quantitation of B. anthracis protective antigen (PA). PI = Post-Infusion PC = Post-Challenge.