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Each sample consisted of RNA extracted from 15 flies. Bacterial stocks were kept frozen in 15% DMSO and subsequently cultured on LB-Agar plates and in LB medium or in the case of S. citri SP4 medium (Tully et?al., 1977). Ecc15 has been previously described (Basset et?al., 2000). Cultures of Ecc15 and E. cloacae were grown overnight at 29��C and used as pellets of OD600?=?200, pellets were not washed prior to use. E. faecalis was grown overnight at 37��C and used as a pellet of OD600?=?15. http://www.selleckchem.com/products/Neratinib(HKI-272).html S. citri strain GII3 (Vignault et?al., 1980) was grown at 32��C and used as a low-concentration pellet. Septic injuries were performed by pricking adults in the thorax with a thin needle dipped into a bacterial pellet (Romeo and Lemaitre, 2008). In the case of B. bassiana natural infection was performed by placing anaesthetized flies on a Petri dish containing sporulating fungus and shaking until flies were covered with spores (Romeo and Lemaitre, 2008). S. citri infection was performed by microinjection of 9?nl bacterial pellet resuspended in PBS, using a nanoject microinjector (Drummond Scientific). Infected flies were then maintained at 29��C in yeast-free tubes. For each pathogen tested three independent repeats of 20 flies per genotype were subjected to septic injury. Survival was scored every at least every 24?h and flies were transferred to new tubes every 3 days. Samples https://en.wikipedia.org/wiki/Quinapyramine for Spiroplasma titre analysis were taken 3.5 days after septic injury. For antimicrobial peptide expression analysis, flies were collected 6 and 24?h post septic injury. All flies were 4 days old at the beginning of experiments. Each experiment was repeated independently a minimum of three times (unless otherwise indicated). A minimum of four replicate crosses were examined for each genotype in each repeat of an experiment, error bars represent the standard error of the mean of replicate crosses of one representative http://www.selleckchem.com/products/Roscovitine.html experiment (unless otherwise indicated). Statistical significance was calculated using a standard two-tailed t-test and considered significant if P-values were lower than 0.05. Asterisks indicate the level of significance, *P?