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2. SIGNIFICANT ACCOUNTING POLICIES (Details Narrative) - USD ($) | 3 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | ---
Aug. 10, 2020 | Apr. 30, 2020 | Apr. 30, 2019 | Aug. 14, 2020 | Apr. 30, 2018
Intangible assets |  | $ 3,549,427 | $ 3,549,427 |  |
Impairment of intangible assets |  | 0 | 0 |  |
Research and development costs |  | 301,221 | 460,052 |  |
Uninsured cash balances |  | 618,000 | 127,000 |  |
Accumulated deficit |  | (103,858,259) | (100,031,371) |  |
Net loss |  | (3,826,888) | (4,067,228) |  |
Cash in bank |  | 894,861 | $ 515,253 |  | $ 1,059,798
Subsequent Event [Member] |  |  |  |  |
Cash in bank |  |  |  | $ 4,900,000 |
Block Trade [Member] |  |  |  |  |
Proceeds from the sale of equity |  | 2,150,000 |  |  |
Private Placement [Member] |  |  |  |  |
Proceeds from the sale of equity |  | 500,000 |  |  |
Block Trade [Member] | Subsequent Event [Member] |  |  |  |  |
Proceeds from the sale of equity | $ 4,700,000 |  |  |  |
Cell-in-a-Box [Member] |  |  |  |  |
Intangible assets |  | 1,549,427 |  |  |
Diabetes License [Member] |  |  |  |  |
Intangible assets |  | $ 2,000,000 |  |  |
SG Austria [Member] |  |  |  |  |
Percentage investment in SG Austria |  | 14.50% |  |  |

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