Complex sentence: For example, in mouse cells and tissues, syndecan 1 is highly expressed in fibroblastic and epithelial cells especially high in keratinocytes whereas low in endothelial and neural cells.
Split into simpler sentences: For example, in mouse cells and tissues, syndecan 1 is highly expressed in fibroblastic and epithelial cells. It is especially high in keratinocytes whereas low in endothelial and neural cells.