Compositions and methods for treating andor preventing a variety of diseases and conditions that are amenable to immunotherapy and, in one particular embodiment, compositions and methods for treating andor preventing cancer in an animal are described. If not, then the wireless device configures one or more wireless security parameters so that the wireless device will use a secure wireless communications protocol to communicate with other wireless devices. The rotary portion 5 has a base part 5a which is rotatable around a rotation axis 5b intersecting the ceiling wall 3. An anode is disposed such that a closed loop electron Hall current containment region is formed within the magnetic field.