After infection with Ecc15, we observed that the proportion of Drosomycin-GFP expressing larvae was smaller in PGRP-LA2A mutants (Figure S3) and that even when selecting larvae expressing the reporter, the fluorescence intensity was lower in PGRP-LA2A mutant than in wild-type tracheae (Figures S3, 6C). The gene discussed is PGLYRP1; the disease is infection.