abnormal mandibular nerve branching, abnormal mandibular nerve innervation pattern, abnormal miniature endplate potential, abnormal motor neuron innervation pattern, abnormal muscle spindle morphology, abnormal myocardium layer morphology, abnormal neural crest cell migration, abnormal neuromuscular synapse morphology, abnormal petrosal ganglion morphology, abnormal phrenic nerve morphology, abnormal prepulse inhibition, abnormal proprioceptive neuron morphology, abnormal seminiferous tubule morphology, abnormal sensory neuron innervation pattern, abnormal spinal nerve morphology, abnormal superior vagus ganglion morphology, abnormal sympathetic ganglion morphology, abnormal trigeminal ganglion morphology, abnormal vagus nerve morphology, abnormal ventral spinal root morphology, absent Schwann cells, absent mandibular nerve, absent oligodendrocytes, absent trabeculae carneae, absent trigeminal nerve, cardiovascular system phenotype, decreased Schwann cell number, decreased Schwann cell precursor number, decreased cardiac muscle contractility, decreased cardiac output, decreased heart weight, decreased left ventricle systolic pressure, decreased motor neuron number, decreased muscle spindle number, decreased radial glial cell number, decreased sensory neuron number, decreased testis weight, decreased ventricle muscle contractility, defasiculated phrenic nerve, dilated heart ventricle, embryonic growth arrest, embryonic lethality during organogenesis, complete penetrance, enhanced long term potentiation, enlarged pericardium, failure of atrioventricular cushion closure, hypermyelination, increased muscle spindle number, increased sensitivity to xenobiotic induced morbidity/mortality, limp posture, muscle phenotype, neonatal lethality, complete penetrance, nervous system phenotype, no spontaneous movement, poor circulation, preweaning lethality, complete penetrance, preweaning lethality, incomplete penetrance, small dorsal root ganglion, small nodose ganglion, small petrosal ganglion, thin diaphragm muscle, thin ventricular wall, trabecula carnea hypoplasia, unresponsive to tactile stimuli