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US aviation system starting to show strains from shutdown
The partial government shutdown is starting to strain the national aviation system, with unpaid security screeners staying home, air-traffic controllers suing the government and safety inspectors off the job.
New antibody attacks 99% of HIV strains
Scientists have engineered an antibody that attacks 99 percent of HIV strains and can prevent infection in primates.
Seven new strains of BSR identified in Iran
Researchers at the University of Tabriz in East Azarbaijan province, northwestern Iran, have identified seven new strains of barley stripe rust (BSR) pathogens.

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