Vaccines against human carcinomas: strategies to improve antitumor immune responses.

J Biomed Biotechnol · 2010 · PMC2840411 · PMID 20300434

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showed a trendno p-value reported

Twelve of 32 patients showed declines in serum PSA post-vaccination; patients with greater PSA-specific T-cell responses showed a trend toward enhanced survival.

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Quoted from the open-access full text in Europe PMC under the licence the publisher applied. The sentence is reproduced exactly as published; the emphasis is ours.