Figure 5: Proteins specifically expressed in the mesenchymal cells. Examples of proteins expressed in the group of mesenchymal tissues. This group of tissues has in general a more heterogeneous expression across the tissues constituting the cluster found in the analysis. Emilin, an extracellular matrix glycoprotein that associates with elastic fibers, shows cytoplasmic expression in smooth muscle cells (A). Desmin, a well-known marker for striated muscle fibers used in clinical diagnostics for distinguishing rhabdomyosarcomas, shows a distinct positivity in striated muscle fibres (B). Less well-known proteins included in the mesenchymal group included TMEM43 expressed in ovarian stroma cells (C) and SLC22A showing a distinct membranous expression pattern in cardiomyocytes from a normal heart (D).