Table 1 Summary of the similarities and differences between mice, marmosets and humans.

From: MRI tractography reveals the human olfactory nerve map connecting the olfactory epithelium and olfactory bulb

Feature

Mice

Marmosets

Humans

Maxilloturbinate

1

1

1

Ethmoturbinate

6

2

2

Frontal sinus

Absent

Present

Present

Maxillary sinus

Present

Present

Present

Sphenoid sinus

Absent

Present

Present

Ethmoid sinus

Multilamellar

Multicellular

Multicellular

Vomeronasal organ

Present

Present

Present in fetus, debatable in adults

Intact olfactory receptor genes

1036–1223

383–393

323–396

Mean track count ratio (septum: turbinates)

3: 7

5: 5

5: 5