tips Enhancing pili assembly and biofilm formation in Acinetobacter baumannii ATCC19606 using non-native acyl-homoserine lactones March 7, 2015 BMC Microbiology 2015, 15:62Â doi:10.1186/s12866-015-0397-5 Li-mei Luo and Li-juan Wu contributed equally to this work. Published: 7 March 2015