I don't see where Frost was selling PLX since Nov 2010Pls check Protalix Form SC 13D/A filed on 01/20/11 http://phx.corporate-ir.net/phoenix.zhtml?c=101161&p=irol-SECText&TEXT=aHR0cDovL2lyLmludC53ZXN0bGF3YnVzaW5lc3MuY29tL2RvY3VtZW50L3YxLzAwMDExNDQyMDQtMTEtMDAzMTE4L3htbA%3d%3d