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4. LICENSE AGREEMENT OBLIGATION (Details Narrative) - USD ($)	Jan. 31, 2017	Apr. 30, 2016
License Agreement Obligation
License payable	$ 0	$ 150,000

X

- References

No definition available.

+ Details

Name:	pmcb_LicenseAgreementObligationAbstract
Namespace Prefix:	pmcb_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of contractual obligation, including but not limited to, long-term debt, capital lease obligations, operating lease obligations, purchase obligations, and other commitments.

+ References

No definition available.

+ Details

Name:	us-gaap_ContractualObligation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant