Independent Registered Public Accounting Firm’s Consent
We consent to the inclusion in this Registration Statement of Xenetic Biosciences, Inc. on Form S-1, Amendment #5 of our report dated March 29, 2019, except for Note 2, as to which the date is July 1, 2019 which includes an explanatory paragraph as to the Company’s ability to continue as a going concern, with respect to our audits of the consolidated financial statements of Xenetic Biosciences, Inc. as of December 31, 2018 and 2017 and for each of the two years in the period ended December 31, 2018, which report appears in the Prospectus, which is part of this Registration Statement. We also consent to the reference to our Firm under the heading “Experts” in such Prospectus.
/s/ Marcum llp
July 12, 2019