• mice were used to examine the pattern of axonal projections of sensory neurons in the vomeronasal system; no phenotypic analysis was reported

• V1rb2+ olfactory sensory neuron targeting is normal (J:122528)

• axonal projections exhibit defasciculation across the medial surface of the main olfactory bulb

• Npr2+ axons erroneously project into the posterior accessory olfactory bulb

• V1rb2+ axons form glomeruli in the posterior accessory olfactory bulb unlike in wild-type mice

• in 18.2% of mice, exhibit misprojections of V1rb2+ axons in the accessory olfactory bulb