- Monocytes coexpress endothelial and macrophagocytic lineage markers and form cord-like structures in Matrigel under angiogenic conditions. Schmeisser, A., Garlichs, C.D., Zhang, H., Eskafi, S., Graffy, C., Ludwig, J., Strasser, R.H., Daniel, W.G. Cardiovasc. Res. (2001)