Fig. 2
From: Neuronal intranuclear inclusion disease with mental abnormality: a case report
![Fig. 2](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs12883-020-01933-8/MediaObjects/12883_2020_1933_Fig2_HTML.png)
a-c: Skin biopsy performed 3 months after onset. a: Light microscopy showed hyperkeratosis of the epidermis. A few lymphocytes and tissue cells infiltrated through the superficial vessels of the dermis. b and c: Electron microscopy showed round-shaped intranuclear inclusions in the nucleus of the fibrocytes (arrow). The intranuclear inclusions had clear borders and were composed of fibrous substances without a membrane structure