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Extracellular substances, such as free mucin, colloid, and ground substance, are also easily stained, and appear metachromatic. Major applications include blood smears, bone marrow aspirates, semen analysis and cytology of various body fluids including urine and cerebrospinal fluid.
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Modern complete blood count analyzers can provide an automated white blood cell differential, but they have a limited ability to differentiate immature and abnormal cells, so manual examination of the blood smear is frequently indicated. [5] [6] Blood smear examination is the preferred diagnostic method for certain parasitic infections, such as ...
Wright's stain is a hematologic stain that facilitates the differentiation of blood cell types. It is classically a mixture of eosin (red) and methylene blue dyes. It is used primarily to stain peripheral blood smears, urine samples, and bone marrow aspirates, which are examined under a light microscope.
In vivo (within the blood vessel), the codocyte is a bell-shaped cell. It assumes a "target" configuration only when processed to obtain a blood film. In the film these cells appear thinner than normal, primarily due to their pallor (by which thickness is judged on microscopy).
Histology image: 01807loa – Histology Learning System at Boston University - "Bone Marrow and Hemopoiesis: bone marrow smear, neutrophil series" Histology at KUMC blood-blood11; Histology image: 75_07 at the University of Oklahoma Health Sciences Center; Histology at okstate.edu; Slide at hematologyatlas.com - "Neutrophil band" visible in ...
Blood film stained with Giemsa showing Plasmodium (center of image), the parasite that causes malaria infections.. In 1891 Romanowsky [8] [9] [10] developed a stain using a mixture of eosin (typically eosin Y) and aged solutions of methylene blue that formed hues unattributable to the staining components alone: distinctive shades of purple in the chromatin of the cell nucleus and within ...
Rare elliptocytes (less than 1%) on a peripheral blood smear are a normal finding. [citation needed] These abnormal red blood cells are seen in higher numbers in the blood films of patients with blood disorders such as: [4] Hereditary elliptocytosis and Southeast Asian ovalocytosis; Thalassemia; Iron deficiency; Myelodysplastic syndrome and ...