Nail Isthmus: A Distinct Region of the Nail Apparatus

<table>A biopsy specimen from the left second finger showed (i) a marked, highly eosinophilic, keratinized substance attaching the distal and visceral nail plate (arrow) and (ii) a whorled, highly eosinophilic, keratinized substance into the horny layer of the finger tip (dotted arrow) (Hematoxylin and eosin staining, original magnification <svg height="11.125" id="M1" style="vertical-align:-0.1638pt" version="1.1" viewbox="0 0 34.575001 11.125" width="34.575001" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
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Dermatology Research and Practice

Nail Isthmus: A Distinct Region of the Nail Apparatus

Figure 3