| Schedule of Segment Information | 
 The following represents
selected financial information for our segments for the three months ended January 31, 2021 and 2020 and as of January 31, 2021
and October 31, 2020: 
  
    |   | 
      | 
    For the Three Months Ended  
January 31, | 
      | 
 
    |   | 
      | 
    2021 | 
      | 
      | 
    2020 | 
      | 
 
    | Net loss: | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | CAR-T Therapeutics | 
      | 
    $ | 
    (960,736 | 
    ) | 
      | 
    $ | 
    (630,333 | 
    ) | 
 
    | Cancer Vaccines | 
      | 
      | 
    (906,336 | 
    ) | 
      | 
      | 
    (195,596 | 
    ) | 
 
    | Anti-Viral Therapeutics | 
      | 
      | 
    (480,806 | 
    ) | 
      | 
      | 
    - | 
      | 
 
    | Cancer Diagnostics | 
      | 
      | 
    (8,962 | 
    ) | 
      | 
      | 
    (1,790,646 | 
    ) | 
 
    | Patent Licensing | 
      | 
      | 
    124,463 | 
      | 
      | 
      | 
    - | 
      | 
 
    | Total | 
      | 
    $ | 
    (2,232,377 | 
    ) | 
      | 
    $ | 
    (2,616,575 | 
    ) | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Total operating costs and expenses | 
      | 
    $ | 
    2,745,631 | 
      | 
      | 
    $ | 
    2,629,869 | 
      | 
 
    | Less non-cash share-based compensation | 
      | 
      | 
    (986,099 | 
    ) | 
      | 
      | 
    (1,021,334 | 
    ) | 
 
    | Operating costs and expenses excluding non-cash share-based compensation | 
      | 
    $ | 
    1,759,532 | 
      | 
      | 
    $ | 
    1,608,535 | 
      | 
 
    |   | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | Operating costs and expenses excluding non-cash share based compensation expense: | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | CAR-T Therapeutics | 
      | 
    $ | 
    557,680 | 
      | 
      | 
    $ | 
    346,341 | 
      | 
 
    | Cancer Vaccines | 
      | 
      | 
    537,988 | 
      | 
      | 
      | 
    98,270 | 
      | 
 
    | Anti-Viral Therapeutics | 
      | 
      | 
    270,256 | 
      | 
      | 
      | 
    - | 
      | 
 
    | Cancer Diagnostics | 
      | 
      | 
    6,432 | 
      | 
      | 
      | 
    1,163,924 | 
      | 
 
    | Patent Licensing | 
      | 
      | 
    387,176 | 
      | 
      | 
      | 
    - | 
      | 
 
    | Total | 
      | 
    $ | 
    1,759,532 | 
      | 
      | 
    $ | 
    1,608,535 | 
      | 
 
 
  
    |   | 
      | 
    January 31,  
2021 | 
      | 
      | 
    October 31, 
2020 | 
      | 
 
    | Total assets: | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
      | 
 
    | CAR-T Therapeutics | 
      | 
    $ | 
    5,849,920 | 
      | 
      | 
    $ | 
    2,988,124 | 
      | 
 
    | Cancer Vaccines | 
      | 
      | 
    5,822,106 | 
      | 
      | 
      | 
    946,923 | 
      | 
 
    | Anti-Viral Therapeutics | 
      | 
      | 
    2,775,760 | 
      | 
      | 
      | 
    2,464,361 | 
      | 
 
    | Cancer Diagnostics | 
      | 
      | 
    85,463 | 
      | 
      | 
      | 
    2,869,529 | 
      | 
 
    | Patent Licensing | 
      | 
      | 
    71,153 | 
      | 
      | 
      | 
    184,027 | 
      | 
 
    | Total | 
      | 
    $ | 
    14,604,402 | 
      | 
      | 
    $ | 
    9,452,964 | 
      | 
 
 
 |