The underlying tuft exhibits mild segmental mesangial hypercellularity (H&E, original magnification 600). (d) On immunofluorescence, there is intense positivity for IgA in a global mesangial distribution (original magnification.    From Wordnik.com.  [Recently Uploaded Slideshows] Reference

Histological analysis of Notch mutant mice revealed a massive dermal hypercellularity, a complete loss of subcutaneous fat, the presence of numerous hyperproliferative epidermoid cysts in the dermis and a thickened and hyperkeratinized epidermis (acanthosis and hyperkeratosis) (.    From Wordnik.com.  [PLoS ONE Alerts: New Articles] Reference