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Acquisition - Summary of Preliminary Allocation of Total Purchase Price (Detail) - USD ($) | Feb. 28, 2019 | Nov. 30, 2018 | Jun. 11, 2018
--- | --- | --- | ---
Business Acquisition [Line Items] |  |  |
Goodwill | $ 1,941,411 | $ 1,941,411 |
Blood Bank Inc and Tianhe Stem Cell Biotechnologies Inc [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Accounts receivable |  |  | $ 188,019
Inventory |  |  | 16,037,957
Prepaid expenses |  |  | 68,867
Property and equipment |  |  | 568,407
Other asset - Tiahne capital stock |  |  | 308,000
Total identifiable net assets acquired |  |  | 18,162,250
Less: Deferred revenue |  |  | (1,405,406)
Goodwill |  |  | 1,941,411
Total |  |  | 18,698,255
Blood Bank Inc and Tianhe Stem Cell Biotechnologies Inc [Member] | Brand [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Intangible assets |  |  | 31,000
Blood Bank Inc and Tianhe Stem Cell Biotechnologies Inc [Member] | Customer Relationships [Member] |  |  |
Business Acquisition [Line Items] |  |  |
Intangible assets |  |  | $ 960,000

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