sentences:  These polymorphisms have been valuable as genomic signposts, or "markers", in the search for common variants that influence susceptibility to common diseases.Research has linked common SNPs to diseases such as type 2 diabetes, Alzheimer's, schizophrenia and hypertension.Collateral fissure
  
  The collateral fissure (or sulcus) is on the tentorial surface of the hemisphere and extends from near the occipital pole to within a short distance of the temporal pole.