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[lemma=should | !(lemma=on | tag=VBN)] [tag=IN | tag=□]
[lemma=should | !(lemma=on | tag=VBN)] [tag=IN | lemma=□]
The Hopkins scientists report that squamous cell carcinoma in patients over age 75 " more commonly results from accumulated spontaneous mutations rather than through heavy exposure to known carcinogens , and less commonly involves mutation of the p53 gene . In laboratory studies , the antibody reacted with a protein called PC-1 in the nuclei of cancerous cells from 16 of 17 surgically removed prostate cancer specimens , says Partin , who presented the findings of his team 's work at the annual meeting of the American Urology Association in Las Vegas , Nevada , on April 24 . Congress has enacted similar legislation dealing with taxation of cable services . Her recently released and widely praised book , " Undercurrents , " describes her battles with depression and her eventual successful treatment through the still-controversial technique of electroconvulsive therapy .