The Turkekole sisters, Ipek (left), Yasemin and Aylin take a walk in a park. Ipek and Aylin were born with sickle cell disease. Aylin was cured though the transplantation of stem cells donated by Yasemin. Though healthy now, Aylin suffered life-threatening complications in the year after the procedure. Ipek presently manages the disease through a routine of regular exchange blood transfusions during which a portion of her blood is withdrawn, sickled cells are separated from blood plasma, and then the plasma is reinfused together with healthy red blood cells from a donor. While this may not be a long-term solution, and although Yasemin is also a donor match for Ipek, their sister's experience has made Ipek hesitant to undergo a stem cell transplant herself.