Provided are common path frequency domain and time domain OCT systems and methods that use non-specular reference reflection for obtaining internal depth profiles and depth resolved images of samples. The cards games are usually variations of poker, where the quality of the players’ hands is due to skill and strategy rather than the luck of the draw. The resource status synchronization table is updated on an event basis when the processing active node accepts responsibility for processing the service request and again when the processing active node completes the service request in order to maintain coherency between all of the active nodes. , vaccines, comprising PMP polypeptides or PMP-derived polypeptides or antibodies thereto.