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EQUITY INVESTMENT AND ROYALTIES - Schedule of stock options, valuation assumptions (Details) - Cell MedX Corp. [Member]
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Risk-free rate (%) 0.39% 0.13%
Expected stock price volatility (%) 121.28% 182.61%
Expected dividend yield (%) 0.00% 0.00%
Expected life of options (years) 1 year 29 days 2 years 29 days