<prompt> Cabot;s ring is seen in-Megaloblastic anemiaSickle cell diseaseIron deficiency anemiaAutoimmune anemia  <response>: In the peripheral blood smear of megaloblastic anaemia . Cabot rings are thin, threadlike, red to violet rings or figure 8 shaped inclusions in red blood cells. Cabot rings are remnants of the mitotic spindle, and can be seen in megaloblastic anemia, medication effect, myelodysplasia and other forms of dyserythropoiesis. reference :textbook of Pathology, 7th edition ,Author Harsha Mohan ,page number 283, figure 10.20 