can someone paraphrase this into something a normal person can understand. i don't understand any of it:
DNA recombination is a process shared by all DNA carrying organisms that is used for a variety of cellular processes including DNA repair, genetic exchange, and meiotic chromosome segregation. Neisseria gonorrhoeae is the sole causative agent of gonorrhea and has evolved three high-frequency, diversity-generation systems to avoid immune surveillance. This antigenic variability of N. gonorrhoeae populations is one reason that natural immunity to re-infection has never been demonstrated and has prevented development of an effective vaccine. One of these systems is mediated by high-frequency gene conversion events between one of many silent pilin loci and the single expressed pilin locus, pilE. This produces variant pilin proteins that form antigenically divergent pili, which are the hair-like appendages expressed by many bacteria. (Cahoon and Seifert, 2009).