The Sema-3A & NRP1/Plexin A1 receptor kit can be used for immuncytochemical labeling of Sema-3A relative to its receptors, NRP1 and Plexin A1. The kit also includes secondary reagents conjugated to DyLight® 488 or DyLight® 594 for detection of primary antibodies using green (493Ex/518Em) or red (593Ex/618Em) filter sets.