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9. COMMITMENTS AND CONTINGENCIES (Details Narrative) - USD ($)
3 Months Ended 9 Months Ended
Jan. 31, 2017
Jan. 31, 2016
Jan. 31, 2017
Jan. 31, 2016
Rent and lease expense $ 13,702 $ 13,852 $ 37,131 $ 43,464
ViruSure [Member]        
Future milestone payments     $ 187,000