A method and a network device are provided to transmit network packets through a network security device. longipalpis salivary antigens that elicit an immune response in animal or human against Leishmania, vaccine compositions comprising said vectors andor Lu. A surgeon can select the component most adapted to the orientation of the resectioned surface from a set of components in which the axes of symmetry of the components are oriented differently with respect to their rear faces. In one embodiment, architecture is provided for supporting biometrically secure transactions over networks. The saw brake senses the approach of a conductive element, such as a finger or a hand, to the saw blade, and immediately stops the saw.