Reactive lymphocyte, viral infection blood

A Reactive Lymphocyte in each frame. Reactive lymphocytes are medium-to-large in size and show much more cytoplasm than usual lymphocytes. The cell outline may or may not be irregular. Cytoplasmic color is gray or gray-blue, frequently showing increased basophilic color at the periphery. Vacuoles and/or azurophilic granules may be present. The nucleus is frequently irregular (oval, elliptical, triangular, indented, overlapping) in shape. Chromatin often is less dense and/or more evenly distributed than in the usual lymphocyte. A nucleolus may be seen. Viral infection blood - 100X


Image ID: 0147-019

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