Types of stem cell,artwork. Stem cells are undifferentiated cells that can produce other types of cell when they divide. There are three main types in mammals: embryonic stem cells,derived from blastocysts; adult stem cells,which are found in adult tissues; and cord blood stem cells,which are found in the umbilical cord. Here,the stem cells develop from a totipotent stage in a morula (top left) to a blastocyst (upper centre). The pluripotent inner cell mass is harvested (third stage) and cultured in a petri dish (fourth and fifth stages). At bottom,they have differentiated into three cell types (left to right): nerve cell,liver cells,and red blood cells | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Jensen, Mikkel Juul |
Bildgröße: | 3307 px × 5671 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |