Stem cell transplantation is a medical procedure that involves transferring stem cells into a patient to treat various diseases, particularly blood disorders like leukemia and lymphoma. These stem cells can come from the patient’s own body, a donor, or umbilical cord blood. The goal is to restore healthy blood cell production after the patient undergoes treatments like chemotherapy or radiation. The process typically includes several steps: collecting stem cells, conditioning the patient with treatments to prepare their body, and finally infusing the stem cells. Once infused, the stem cells can migrate to the bone marrow and begin producing new, healthy blood cells, helping the patient recover and improve their overall health.