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16 of 16 Researchers have discovered a way to keep bacteria-
killing viruses alive for weeks; when placed in wound dressings,
they can kill bacteria that try to infect patients.Bacteria-
killing viruses, or bacteriophages, attack bacteria in the same
way as the creatures in the movie Aliens. The virus invades a
bacterium, uses it as a material to create copies of itself, and
then explode outward to infect other bacteria. Researchers at
the University of Strathclyde in Scotland have found a way to
bind these ordinarily short-lived viruses to polymer microbeads.
The microbeads can be built into sutures and wound dressings,
and kept alive there and active for up to three weeks. Once
inplanted in a patient, the bacteriophages look for harmful
bacteria like MRSA (methicillin-resistant Staphlococcus aureus),
much-feared bacterium that is proving very difficult to treat
with traditional antibiotics. The bacteriophage viruses attack
the superbugs, and kill