Palestinian prisoners in the Israeli Naqab (Negev) Prison Wednesday joined the prisoners\'\' open hunger strike, that has entered its 16th day today in numerous Israeli prisons, against the isolation policy and humiliating practices against the prisoners, said a letter from the Prisoners\'\' Movement in Naqab. The Prisoners\'\' Movement welcomed the prisoners exchange deal between Hamas and Israel that will secure the release of more than 1000 Palestinian prisoners, and stressed the unity of all Palestinian prisoners in Israeli prisons.