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Commitments and Contingencies (Details Narrative) - USD ($)
1 Months Ended 3 Months Ended 6 Months Ended
Oct. 31, 2019
Jan. 31, 2019
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]              
Research and development expenses     $ 355,051 $ 159,926 $ 590,815 $ 417,471  
Accrued research and development expenses     695,955   695,955   $ 1,159,950
Prepaid research costs     200,000   200,000    
Debt Instrument, Face Amount   $ 250,000          
Debt Instrument, Maturity Date   Mar. 16, 2016          
Litigation Settlement, Amount Awarded from Other Party $ 267,680            
Repayments of Notes Payable     99,588   199,588 100,000  
Repayments of Related Party Debt         150,412    
Yeda Research and License Agreement [Member]              
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]              
Research and development expenses     12,500 50,000      
MD Anderson Sponsored Research Agreements [Member]              
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items]              
Research and development expenses     313,384 124,926 514,148 362,471  
Accrued research and development expenses     $ 0 $ 462,785 $ 0 $ 462,785