Study Status: Completed
Recruit Status: Completed
Study Type: Observational
Official Title: The Molecular Biology of Paroxysmal Nocturnal Hemoglobinuria (PNH)
Brief Summary: This study is designed to better understand the molecular biology of paroxysmal nocturnal hemoglobinuria (PNH) and to determine if prion protein (PrP) functions in long term hematopoietic stem cell renewal.