Evaluate the collective function of references cited together in a given text segment.
Classify their combined role into one of the following categories: 'method', 'background', or 'result'.

Text:c-Jun-N-Terminal inhibitory kinase JIK and TRAF2 to the stimulated ER stress sensor IRE-1, where TRAF2 can activate ASK-1, an upstream activating kinase of JNK (2) activation of caspase 12, which is released from its
Category: