It is a cell-free filtrate vaccine, which means it contains no dead or live bacteria in the preparation.

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Among the bargain stocks, Berry says, is Cell Genesys (nasdaq: CEGE - news - people ), which has a number of products in late stage-three trials, including a vaccine for non-small cell lung cancer.

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Nonetheless, several companies are already far along in the development of quicker, more efficacious vaccine-making processes, including, for example, the use of cell cultures instead of chicken eggs.

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Bhatia has been able to grow the virus in a healthy liver cell, which she hopes will help lead to better treatment and, perhaps, a vaccine.

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The trial was successful, and now the vaccine, called GVAX, has begun a final-stage trial on 600 patients at biotech firm Cell Genesys.

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