I am trying to find axillary and mandibular lymph nodes in naive mice, which is turning out to be more difficult than imagined. Therefore, I would like to know if there are some possibilities of using dyes to identify these (draining) Lymph nodes, that would not interfere when we further use the homogenised lymph nodes and organs to perform ELISA or Flow Cytometry based Multiplex assay for cytokines and so on.