The present invention relates to a method for immunostimulation in a mammal, which comprises a. A retaining tab is provided and disposed in the wall proximate the open end for depression of a free end toward the wall and a slot formed in the wall beneath the tab enables the free end to be forced therepast for retaining the free end inside the wall for engagement with the shoulder, thus preventing separation of the inner component from the outer component. The rail assemblies are provided in a substantially mirror arrangement and curve downwardly from their respective forwardmost ends to a lowermost distal portion. The data decoder circuit is operable to apply a decoding algorithm to a decoder input to yield the decoder output and a status input. In addition, in a preferred embodiment, a resetretest actuator is connected with the multifunctional display, and is in circuit communication with the detection device.