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Note 4 - Investment in Wanchun Pharma (Tables) | 12 Months Ended
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Dec. 31, 2016
Notes Tables |
Schedule of Business Acquisitions, by Acquisition [Table Text Block] |
|  |  | $ |
Acquisition cost |  |  | 2,400 |
Less: negative equity investment in Wanchun Pharma |  |  | (239 | )
Less: net assets of Wanchun Pharma (including cash of $1,256) |  |  | (1,347 | )
Excess cost allocated to patent of Plinabulin and charged to expenses |  |  | 814 |

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