The anti-malarial drug Chloroquine was widely used until recent years when the malaria parasite became resistant to the drug.
VOA: special.2010.04.20
One sign of hope is a new way to make the natural defenses of mosquitoes resistant to the Plasmodium parasite.
VOA: special.2010.04.20
It would also depend on the building materials used since some materials are less resistant to heat than others.
VOA: special.2010.03.02
During the last flu season, twelve percent of H1N1 viruses tested in the United States were resistant to Tamiflu.
VOA: special.2009.03.04
Evidence is increasing that common influenza viruses are becoming resistant to the main drug used to treat them.
VOA: special.2009.03.04
But it warns that mosquitoes are becoming increasingly resistant to pesticides, the products used to kill insects.
VOA: special.2009.05.26
This method might be used to help engineer food crops that are resistant to extremely dry conditions.
VOA: special.2010.01.26
Malaria can be treated, but in many areas the parasites have become resistant to different drugs.
VOA: special.2009.12.07
Malaria can be treated, but in many areas the organisms have become resistant to different drugs.
VOA: special.2009.12.22
That finding led to the development of seeds resistant to both Striga and drought.
VOA: special.2009.06.16
The newer ice,experts say, is less resistant to melting during the summer months.
VOA: special.2009.05.05
They are also resistant to fire.
VOA: special.2009.11.17
He says because GM crops can be designed to be resistant to insects and disease they may also be better for the environment.
VOA: standard.2009.10.21
(OMITTED) The report says, farmers have relied so heavily on glyphosate that at least eight species of weeds are now resistant to it.
VOA: standard.2010.04.15
One of the most important things is to identify cases quickly -- especially drug-resistant cases, which are increasing.
VOA: special.2009.03.25
Extensively drug-resistant tuberculosis, or XDR-TB, will not respond to any of those drugs but might still be treatable.
VOA: special.2009.03.25
He is working to develop disease-resistant plants, but he says it will probably take five years.
VOA: special.2010.06.08
This was done by crossbreeding different kinds of wheat to make stronger, more resistant ones.
VOA: special.2009.11.10
Miz Kwolek needed a new way to make stiff, resistant fibers for the job.
VOA: special.2010.02.09
Now,researchers say they have found a much faster way to identify drug-resistant TB.
VOA: special.2009.03.25
The lightweight,standard-issue Humvee is vulnerable to enemy fire and the heavier Mine-Resistant, Ambush-Protected truck,or MRAP, is too top-heavy for steep inclines.
VOA: standard.2010.08.01
Wolfenbarger says insect-resistant GE crops have fewer adverse effects because farmers don't have to spray as many toxic insecticides.
VOA: standard.2010.04.15
And farmers planting glyphosate-resistant crops can use just one less-toxic herbicide to control weeds.
VOA: standard.2010.04.15
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