two clusters of affected variants specific to the 2,4,5-t high dose group included frontal bone variants in the skull ( presence of an interfrontal bone and fusion of the frontals ) and variants in the cervical vertebrae ( imperfect foramina in the first and second cervicals , dyssymphysis of the second cervical , and a shift of the arch foramen from the fourth to the fifth cervical ) .
C0016732
frontal bone
C0037303
skull