
Neutrophil Hypersegmentation in Vitamin B12 Deficiency
Morphology of a hypersegmented neutrophil (pleokaryocyte) in a peripheral blood smear in vitamin B12 deficiency. May-Grünwald-Giemsa stain.
Blood and bone marrow morphology, clinical cases and diagnostic algorithms. Most of the library is in Russian; the English section is growing.
Most of our material is written in Russian — that is the working language of the community. A few pieces exist in English; the rest of the library is one click away and the photographs need no translation.

Morphology of a hypersegmented neutrophil (pleokaryocyte) in a peripheral blood smear in vitamin B12 deficiency. May-Grünwald-Giemsa stain.

Morphology of uric acid crystals in urine sediment: microscopy, features of spindle-shaped forms, clinical significance, and causes of crystalluria.

Explore the morphological features of myelocytes in blood smears: chromatin structure without nucleoli, specific cytoplasmic granulation, and differential diagnosis.

A case of acute leukemia in a rat: leukocytosis 258×10⁹/L, total infiltration with blast cells. Blood smear microscopy, Romanowsky-Giemsa stain.

Microscopy of a native stool sample during coprological examination: morphological characteristics of undigested plant fiber.

Morphology of myeloblasts in peripheral blood smear in acute myeloid leukemia: nucleoli, azurophilic granulation, anemia, and severe thrombocytopenia.

A clinical case of leukemic transformation of MDS to acute myeloid leukemia: hyperleukocytosis, 46% blasts in peripheral blood, anemia, and thrombocytopenia.

Peripheral blood smear in vitamin B12 deficiency: severe macrocytosis with MCV 130 fL, megalocytes, poikilocytosis, and nucleated red blood cells.

Bone marrow findings in severe anemia: erythroid hyperplasia, signs of dyserythropoiesis, and normoblast morphology in aspirate.

Morphology of giant platelets in peripheral blood smears. Peculiarities of manual cell counting in sodium citrate samples, Romanowsky staining.

What does flora phagocytosis in a smear mean? Microscopic signs of acute inflammation, incomplete bacterial phagocytosis by leukocytes, and diagnosis.

Clinical case of relapsed acute myelomonoblastic leukemia: hyperleukocytosis 397×10⁹/L, 83% blasts in blood smear, severe thrombocytopenia, and anemia.