It can also improve heart function and make the body resistant to infection.

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There is another route being considered - involving a rare mutation that leaves people resistant to HIV infection.

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This suggests that those people with an aberrant form of the protein (the result of the defective gene) might be more resistant to herpes infection than their fellows.

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Trials of the drug Tygacil have shown its ability to combat certain infection strains that have become resistant to medicines, including MRSA and the E.coli bug.

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This corn is resistant to corn borer, root worm and herbicide infection.

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The strains of the hospital infection seemed to become more severe after they became resistant.

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They then went through them to see how many mentioned MRSA, the drug-resistant form of the infection, as a direct or contributing cause of death.

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The genetic analysis also showed the strain was resistant to the first choice antibiotic, chloramphenicol, which means more expensive drugs would be needed to treat the infection.

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The bugs in question run the gamut from fungi, which cause ailments such as athlete's foot, to viruses that cause herpes or a potentially deadly infection known as MRSA, or methicillin-resistant staphylococcus aureus.

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