Hematology: Red Blood Cells

CD-59 is involved in ___________.

A 23-year-old male patient presented with a history of fatigue and tiredness. On investigation, he was found to have Hb = 9 gm% MCV = 101 FL. Peripheral smear examination showed macrocytic RBC and hypersegmented neutrophils. Which of the following is the most likely etiology?

A 52-year-old male patient comes with complaints of abdominal pain, nausea, and vomiting. A peripheral blood smear reveals macrocytes and hypersegmented neutrophils and an endoscopy reveals atrophic gastritis. Which of the following conditions is likely to be seen this patient?

An 18-year-old male presented to the outpatient department with gum bleeding and fever for the past 2 months. General examination showed pallor and the systemic examination was unremarkable. Laboratory examination revealed Hb level – 3 gm/dl, TLC – 1500/microL, platelet count – 15000/microL. Peripheral smear shows macrocytes and the reticulocyte count is 0.5. Bone marrow examination revealed fatty streaks and absent megakaryocytes but no immature cells. What is the likely diagnosis?

In iron deficiency anemia, all of the following is increased except