describe how is it derive from humans?
The first step would be The inner cell mass (cells of interest), from the blastocyst stage of the embryo, is separated from the trophectoderm, the cells that would differentiate into extra-embryonic tissue.
Embryonic stem cell
 The inner cell mass (cells of interest), from the blastocyst stage of the embryo, is separated from the trophectoderm, the cells that would differentiate into extra-embryonic tissue. 
who sang johnny b good in back to the future UNANSWERABLE who is "michael j. fox"? Canadian-American actor, comedian, author, film producer, and activist. in which activism is he involved? His foundation, The Michael J. Fox Foundation, was created to help advance every promising research path to curing Parkinson's disease. is he involved in a stem cell related stream? His foundation focuses on the researches, including embryonic stem cell studies. what kind of study is it? UNANSWERABLE what are some of its adverse effects? The major concern with the possible transplantation of ESC into patients as therapies is their ability to form tumors including teratoma. what are its applications? Pluripotent stem cells have shown promise in treating spinal cord injuries, age related macular degeneration, diabetes, etc. any debate on its ethics? Since harvesting embryonic stem cells necessitates destroying the embryo from which those cells are obtained, the moral status of the embryo comes into question.
wiki:14110884
Embryonic stem cell [SEP] Derivation from humans
In vitro fertilization generates multiple embryos. The surplus of embryos is not clinically used or is unsuitable for implantation into the patient, and therefore may be donated by the donor with consent. Human embryonic stem cells can be derived from these donated embryos or additionally they can also be extracted from cloned embryos using a cell from a patient and a donated egg. The inner cell mass (cells of interest), from the blastocyst stage of the embryo, is separated from the trophectoderm, the cells that would differentiate into extra-embryonic tissue. Immunosurgery, the process in which antibodies are bound to the trophectoderm and removed by another solution, and mechanical dissection are performed to achieve separation.