It causes red blood cells to take on a crescent (sickle) shape and become rigid. These cells can break apart easily, leading to anemia. Because they are sticky, they can also form clumps and stick to ...

How do mutations happen, and how do they influence the future of a species? Molecules of sickle-cell hemoglobin stick to one another, forming rigid rods. These rods cause a person's red blood ...

Michelle Harlan, who has sickle beta thalassemia, wants to help others by getting a doctoral degree in clinical psychology.