Quarterly report pursuant to Section 13 or 15(d)

3. SIGNIFICANT ACCOUNTING POLICIES (Details Narrative)

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3. SIGNIFICANT ACCOUNTING POLICIES (Details Narrative) - USD ($)
3 Months Ended
Jul. 31, 2017
Jul. 31, 2016
Apr. 30, 2017
Property, Plant and Equipment [Line Items]      
Intangible assets $ 3,549,427   $ 3,549,427
Impairment of intangible assets 0    
Impairment of long-lived assets 0    
Research and development upfront payment     $ 2,000,000
Research and development costs 427,670 $ 175,004  
Uninsured cash balances $ 4,028,000 $ 2,090,000  
SG Austria [Member]      
Property, Plant and Equipment [Line Items]      
Percentage investment in SG Austria 14.50%    
Cell-in-a-Box [Member]      
Property, Plant and Equipment [Line Items]      
Intangible assets $ 1,549,427    
Diabetes License [Member]      
Property, Plant and Equipment [Line Items]      
Intangible assets $ 2,000,000