Hematopoietic Stem Cell Transplantation is a medical procedure where embryonic stem cells are used for replacing stem cells that are lost or deteriorated due to disease or injury. The process is also known as Blood and Marrow Stem Cell Transplantation and involves transplanting hematopoietic stem cells that differentiate into blood cells. Other synonymous terms used for this procedure are Bone Marrow Transplantation and Peripheral Blood Stem Cell Transplantation. Moreover, Hematopoietic Cell Transplantation, Stem Cell Respiration, Stem Cell Infusion, and Stem Cell Transplantation are also synonyms for this medical procedure. These terms are frequently used interchangeably in literature and by medical professionals and researchers alike.