However , tests as of 2003 did not show any positive clinical effects in a group of 48 patients treated in this way .
The result is supposed to be selective damage or elimination of tumor cells while normal tissues are unharmed .
Tests as of 2003 did not show any positive clinical effects in a group of 48 patients treated in this way .
The result is supposed to be selective damage or elimination of tumor cells while normal tissues are unharmed .