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Seventeen additional trials used nonplacebo controls ; two other trials studied milk thistle as prophylaxis in patients with no known liver disease who were starting potentially hepatotoxic drugs . Seventeen foreign languages are represented . Seventeen new guidelines or advisory reports were issued or endorsed by the NHMRC in 2005-06 . Seventeen whole round cores were taken for shipboard enrichment cultures , cell viability , and shore-based microbiological analysis to measure potential bacterial activities , culture microorganisms , characterize nucleic acids , and investigate fatty acid biomarkers . Seventeen fair sons have I called mine , yet only one remaineth to me , for that his brethren were slain to still the hunger of thy serpents , and now they have taken from me this last child also .