Imgae: Viral blockade: A gel, shown here stained blue, forms tendril structures at pH 7.4. The red dots are 100 nanometer particles, about the same size as HIV, which are trapped in these structures. Credit: Kristopher LangheinrichFrom Technology Review:
A novel gel that filters out HIV could protect women from infection.
A polymer gel that blocks viral particles could one day provide a way for women to protect themselves against HIV infection. The gel reacts with semen to form a tight mesh that blocks the movement of virus particles. The material, which is still in early development, could eventually be combined with antiviral gels currently in clinical trials to provide a dual defense against HIV.
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