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7. WARRANTS
12 Months Ended
Apr. 30, 2016
Warrants and Rights Note Disclosure [Abstract]  
WARRANTS

No warrants were issued or exercised during fiscal years ended April 30, 2016, 2015 and 2014. As of April 30, 2016, warrants to purchase 273,280 shares of our common stock at an exercise price of $2.47 were outstanding and are exercisable through August 30, 2018.