26. Which of the following is not a cause of acquired sideroblastic anemia ?
1. Copper poisoning
2. Lead poisoning
3. Copper deficiency
4. Isoniazid
27. Which of the following is not true for paroxysmal cold hemoglobinuria ?
1. Postinfectious PCH doesn’t recurr
2. IgM against P antigen
3. Mostly postinfectious
4. IgG against P antigen
28. Which of the following G6PD variant leads to chronic non spherocytic hemolytic anemia ?
1. Class I variant
2. Class II variant
3. Class III variant
4. Class IV variant