 NEW YORK--BUSINESS WIRE--Halper Sadeh LLP, a global investor rights law firm, is investigating whether Oxford Immunotec Global PLC NASDAQ: OXFD and its board of directors violated the federal securities laws andor breached their fiduciary duties to shareholders in connection with the proposed sale of Oxford to PerkinElmer, Inc. for 22.00 in cash per share. On behalf of Oxford shareholders, Halper Sadeh LLP may seek increased consideration for shareholders, additional disclosures and infor 