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Stockholders' Equity (Details 2) - USD ($) | 12 Months Ended
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Jun. 30, 2016 | Jun. 30, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |
Stock-based compensation expense | $ 1,002,600 | $ 797,000
Research and development [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |
Stock-based compensation expense | 210,100 | 321,900
General and administrative [Member] |  |
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost [Line Items] |  |
Stock-based compensation expense | $ 792,500 | $ 475,100

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