Scientists creating ‘golden bullet’ for cancer  Scientists
creating ‘golden bullet’ for cancer  Tag:    golden
bulletcancertumours  Washington: Researchers at Washington
University in St. Louis are developing what they call a magic
‘golden’ bullet for cancer, which could kill the tumours by
using gold nanoparticles.  The researchers— including Dr. Younan
Xia, James M. McKelvey, Michael J. Welch— described the
successful photothermal treatment of tumours in mice by using
gold bullets, which are gold nanocages that, when injected,
selectively accumulate in tumours.   "We saw significant changes
in tumour metabolism and histology, which is remarkable given
that the work was exploratory, the laser ``dose`` had not been
maximized, and the tumors were ``passively`` rather than
``actively`` targeted," said Welch.  The nanocages themselves
are harmless.  "Gold salts and gold colloids have been used to
treat arthritis for more than 100 years. People know what gold
does in the body and it``s inert, so we hope this is g