Olfactory ensheathing cells from the nose: Clinical application in human spinal cord injuries

►Clinical trials demonstrate olfactory ensheathing cell transplant is safe. ►Olfactory ensheathing cells from mucosa and from olfactory bulb are different. ►Transplantation of olfactory mucosa in spinal cord injury is an alternative strategy. ►Future clinical trials must be designed to provide reliable data and conclusions.