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9 original

1 experimental

Polar UDC, created largely by the Scott Polar Library at Cambridge, England, is a variant of Universal Decimal Classification. Polar UDC arranges materials by geography, rather than subject. A system of numerical classes, representing geographic regions overlays the standard UDC subject classification. This allows for the co-location, on shelves, of materials about a place, regardless of the subject. In this example, all of the books shown on the shelf are in class *440.2, which represents Nunavut, in Canada.

1 original

An image from a bone marrow particle smear stained with an iron stain (Perls Prussian Blue) showing two ringed sideroblasts surrounded by blue iron granules (100X oil immersion).

1 cast

1 experimental

1 original

An image from a peripheral blood smear demonstrating marked poikilocytosis including schistocytes, tears, targets, occasional spherocytes, bite cells, occasional macrocytes, microcytes and hypochromic red blood cells seen in a patient with Thalassemia Trait (50X oil immersion).