An image forming apparatus, a color registration test pattern of the image forming apparatus, and a method of forming the color registration test pattern are provided. In particular, said PorAFetA antigens are antigenically variable antigens comprising the variable regions of PorAFetA. The first locking element and second locking element may secure the lock to the first member and second member, respectively. Once the desired multimedia content is in the device, the device can be carried with a user so that the user can access the multimedia content anywhere. In an inflator, especially for a protective device in a vehicle, comprising plural components a sealant is applied in the area of abutting components, especially a sealant which adheres to both abutting components. Two darts space the mask away from horse’s eyes.