Use of a cell line to investigate olfactory ensheathing cell-enhanced axonal regeneration http://www.ncbi.nlm.nih.gov/pubmed/12619087
A Clonal Cell Line from Immortalized Olfactory Ensheathing Glia Promotes Functional Recovery in the Injured Spinal Cord http://www.nature.com/mt/journal/v13/n3/full/mt200672a.html
ABM (Applied Biological Materials) has Immortalized Olfactory Ensheathing Glia. You can try them out. (https://www.abmgood.com/productSearch.php?searchQuery=olfactory+)