
Hematology
Cold Agglutinin Disease: Symptoms and Diagnosis
Cold agglutinin disease: mechanism of autoimmune hemolysis by IgM antibodies, symptoms, and features of cold agglutination of erythrocytes in blood tests.
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Cold agglutinin disease: mechanism of autoimmune hemolysis by IgM antibodies, symptoms, and features of cold agglutination of erythrocytes in blood tests.

Clinical signs of sideropenic syndrome in iron deficiency anemia: atrophy of tongue papillae, angular stomatitis, and koilonychia (spoon-shaped nails).