* [[Dobson et al 2002]]
  * https://bdsc.indiana.edu/stocks/misc/wolbachia_gnotobiotic.html
  * Chrostek, E., Marialva, M.S., Esteves, S.S., Weinert, L.A., Martinez, J., Jiggins, F.M., Teixeira, L. (2013). Wolbachia Variants Induce Differential Protection to Viruses in Drosophila melanogaster: A Phenotypic and Phylogenomic Analysis.  PLoS Genet. 9(12): e1003896.