blastocysts (balls of unspecialised cells which become a baby)
Stem cells come from newly fertilized eggs.
Stem cells come from newly fertilized eggs because those eggs divide and evolve into more specialized cells.
There are five basic stem cells classifications there is embryonic stem cells, fetal stem cells. There are the Umbilical cord stem cells, placenta stem cells, and lastly there are adult stem cells.
There are 2 type of stem cells * embryonic stem cells * and adult stem cells fetal stem cells are grouped into the adult stem cell category
the ones that come out of your nose.
Yes, some stem cells do come from humans. The stem cells are taken from embryos. Animals also have stem cells used in research.
stem cells
Stem cells come from newly fertilized eggs.
Embryonic stem cells come from umbilical cords in small quantities, which are harvested by collecting cord blood.
Cord stem cells are exactly like normal stem cells, but they do come from an aborted fetus like most stem cells. Just like normal stem cells, they can be used to create any other cell needed in the human body.
Stem cells come from newly fertilized eggs because those eggs divide and evolve into more specialized cells.
most human embryonic stem cells used for research come from unused IVF eggs. there are then strict regulations on how long these cells are allowed to grow for and what you are wllowed to do with them in the meantime and how you get ride of them when you are done, but these vary from country to country. there are other types of stem cells that are presnt in adults though (like hemopoatic (forgive my spelling) stem cells). much research has been carried out on these adult stem cells too. also, stem cells can be studied in living organisms (for example fruit flies or mice) and therefore come from (and are often not removed from) animals.
There are five basic stem cells classifications there is embryonic stem cells, fetal stem cells. There are the Umbilical cord stem cells, placenta stem cells, and lastly there are adult stem cells.
Hemocytoblasts, or sometimes also called pluripotent stem cells.
Through the nostrils, into the brain, and through the bloodstream. If the stem cells were denied, they would come out the mouth.
Through the nostrils, into the brain, and through the bloodstream. If the stem cells were denied, they would come out the mouth.
There are 2 type of stem cells * embryonic stem cells * and adult stem cells fetal stem cells are grouped into the adult stem cell category