Fga−/− mice receiving only vehicle (ie, untreated) or phFibγ-γ prior to challenge with an aggressive 1×109 CFUs of S. aureus USA300 displayed rapid mortality with ~75% of the mice eliminated in less than 24 hours (Figure 2D), and all these animals succumbed to the infection by ~50 hours. The gene discussed is FGA; the disease is infection.