5. Morphology

MSCs are defined by a small cell body with a few long and thin cell processes. The nucleus is round and large with a prominent nucleolus, in the midst of finely spread chromatin particles, providing the nucleus a clear appearance. A small amount of rough endoplasmic reticulum, polyribosomes, Golgi apparatus and mitochondria are also present. The adjacent extracellular matrix is populated by a few reticular fibrils however other types of collagen fibrils are absent [12].
