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9. Fair Value of Warrants

12 Months Ended

Dec. 31, 2013

The following tables summarize the assumptions used in computing the fair value of liability warrants subject to fair value accounting at the date of issue during the year ended December 31, 2013.

Expected dividend yield	0%
Risk-free interest rate	0.26% - 1.82%
Expected volatility	74.09% - 98.78%
Expected Life (years)	2.0 – 10.0
Exercise price	$0.001-$0.50
Company stock price	$0.32 - $0.82

The following tables summarize the assumptions used in computing the fair value of liability warrants subject to fair value accounting at the year ended December 31, 2013.

Expected dividend yield	0%
Risk-free interest rate	0.78% - 1.27%
Expected volatility	76.80% - 78.05%
Expected Life (years)	3.5 – 4.0
Exercise price	$0.001
Company stock price	$0.32