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Equity Investment and Royalties - Schedule of stock options, valuation assumptions (Details) - Cell MedX Corp. [Member]
6 Months Ended
Jun. 30, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Risk-free rate (%) 0.09%
Expected stock price volatility (%) 161.30%
Expected dividend yield (%) 0.00%
Expected life of options (years) 6 months 29 days