Although the worldwide incidence of HIV infection is high, the retrovirus displays a surprisingly low infectivity in vitro. As a potential explanation for this discrepancy, Münch et al. (2007) now identify and characterize a factor found in human semen that under certain conditions can enhance HIV infectivity by more than 100,000-fold. © 2007 Elsevier Inc. All rights reserved.
Roan, N. R., & Greene, W. C. (2007, December 14). A Seminal Finding for Understanding HIV Transmission. Cell. https://doi.org/10.1016/j.cell.2007.11.030