It has been reported that mice lacking Akt3 have small brains.

Mice lacking this protein eat until they are four times their normal size.

Mice lacking the gene were slower to leave a wide open space.

Researchers have already established that mice lacking a particular gene are less sensitive to heat and pressure.

The major deficit in Emx1-/- mice is that they completely lack the corpus callosum.

The mice lacking the Lmx-1 produced ventral skin on both sides of their paws.

Mice lacking functional glutamate receptor 1 were reported in 1994.

Researchers found the genetically-altered mice lacked a certain nervous system protein related to smell.

Mice lacking all three synapsins are prone to seizures, and experience learning defects.

This mouse plainly lacked any circadian guidance in the absence of environmental cues.