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Colour-blind no more Two formerly colour-blind squirrel monkeys can now see in full colour. The animals were injected in the eye with a harmless virus carrying a gene they lacked. This enabled them to make “long-wavelength opsin”, a pigment needed to distinguish red from green (Nature, DOI: 10.1038/nature08401). Protect the mothers If pregnant women catch swine flu, their health is at particular risk, so mothers-to-be are the subjects in the latest swine flu vaccine trial, conducted by the US National Institute of Allergy and Infectious Diseases. The 120 receiving the vaccine will be monitored for adverse effects,
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