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SUBSEQUENT EVENT	6 Months Ended
	Jun. 30, 2017
SUBSEQUENT EVENT
SUBSEQUENT EVENT	5. SUBSEQUENT EVENT In December 2007, we granted a license to our human telomerase reverse transcriptase technology for use in human diagnostics to Sienna Cancer Diagnostics Limited, or Sienna, which was a privately held company in Australia. In connection with the license, we received 13,842,625 ordinary shares in Sienna which we recorded at a zero cost basis under the cost method of accounting. On August 3, 2017, Sienna became a publicly traded company on the Australian Securities Exchange Limited, or ASX, under the ticker symbol SDX. Since our shares are subject to a 24-month trading restriction from the effective date of Sienna’s listing on the ASX, we will continue to account for our investment in Sienna under the cost method of accounting until there is a readily determinable fair value for our shares, and such shares meet the definition of a marketable security.

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