To date, no study has been published on cell renewal in the olfactory epithelium of Chondrichthyes.

Much information about this complicated system have been collected in different groups, but nothing is known about Chondrichthyes.

There are not very many data in the literature about the morphological and molecular features of the olfactory epithelium of Chondrichthyes.

The possible presence of crypt neuron-like cells in chondrichthyes would represent an interesting common feature between bony and cartilaginous fishes.