anti–sickling

:  preventing or counteracting the sickling of red blood cells (as in sickle cell anemia) anti-sickling drugs When they slipped the gene into blood-making cells of mice with the disease, the anti-sickling hemoglobin made it into 99 percent of the red cells and reversed key symptoms …—Rachel K. Sobel, U.S. News & World Report, 24 Dec. 2001