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Breast cancer vaccine hope raised
the vaccine targets breast cancer caused by an excess of a protein called r2 - and even destroyed tumours resistant to current drugs .
the new vaccine contains genes that produce the r2 receptor, and a compound which stimulates the immune system .
however, dr sarah rawlings, of the charity breakthrough breast cancer, said: this is very early staggresearch that has only been carried out in mice so we don't actually known if it could be used in women .
in the absence of regulatory t cells, the immune systeam responded much more strongly to the vaccine .
but 2-positive breast cells can contain humany more receptors than is typical, promoting a particularly aggressive type of tumour that affects up to 30% of all breast cancer patients .
r2 receptors promote normal cell growthere, and are found in low amounts on normal breast cells .
Generated 2008-11-6_2:6
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