United Parcel Service Inc. has completed its acquisition of Marken, a company based in London, England and Research Triangle N.C. that provides supply-chain services to the life-sciences industry and stores and distributes clinical trial materials.

The transaction closed on Wednesday and makes Marken a wholly owned subsidiary of Atlanta-based UPS (NYSE: UPS). The purchase will provide UPS with growth opportunities across the life-sciences customer base, according to a news release.