Hydrocephalic incidence in mouse lines with conditional, systemic, or haploinsufficient mutations of Pax3 and/or Pax7. Summary of hydrocephalus in the different mouse lines is indicated (*); the occurrence is sex-independent on mixed genetic background; presence of hydrocephalus (**) was determined by gross and/or anatomical (coronal sectioning) examination of postnatal animals one week old and beyond. This evidence concerns the gene PAX3 and Hydrocephalus.