Close window Published online: 06 January 2005; | doi:10.1038/news050103-8 Gene fights off HIVHelen Pearson Extra copies generate protein that confers disease resistance. Treatments for HIV could one day be tailored to a person's genes.© WHO/ P. Hugo A gene that partly explains people's different susceptibility to HIV has been identified by US scientists. The discovery may help doctors tailor treatment to patients' genetic make-up. Researchers know that certain people are naturally resistant to HIV. Some people develop full-blown AIDS several months after infection by the virus, whereas others remain disease-free for decades. Differences in a gene called CCL3L1 may underlie some...