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Embryonic Stem Cells

Embryonic Stem Cells

Embryonic stem (ES) cells were first discovered in mice in 1981 by Martin Evans. In 1998, James Thomson identified a method to isolate embryonic stem cells from humans. Human embryonic stem cells (hESCs) are obtained from 3-5 day old embryos that remain unused after an in vitro fertilization procedure.
ES cells are grown in a culture medium where they can divide indefinitely, creating ES cell lines. Under certain conditions, ES cells can differentiate, either spontaneously into a variety of...

Embryonic Stem Cells

Embryonic Stem Cells

Embryonic stem (ES) cells are undifferentiated pluripotent cells, meaning they can produce any cell type in the body. This gives them tremendous potential in science and medicine since they can generate specific cell types for use in research or to replace body cells lost due to damage or disease.

Stem Cell Culture

Stem Cell Culture

Stem cell research aims to find ways to use stem cells to regenerate and repair cellular damage. Over time, most adult cells undergo the wear and tear of aging and lose their ability to divide and repair themselves. Stem cells do not display a particular morphology or function. Adult stem cells, which exist as a small subset of cells in most tissues, keep dividing and can differentiate into a number of specialized cells generally formed by that tissue. These cells enable the body to renew and...

Stem Cell Therapy for Tissue Regeneration

Stem Cell Therapy for Tissue Regeneration

Stem cell therapy is a method used in regenerative medicine to repair and restore function to damaged tissues and organs. Stem cells have the potential to proliferate and differentiate into various tissue types, making them ideal candidates for tissue regeneration. For example, hematopoietic stem cell transplants are commonly used in blood cancer treatment to replenish damaged bone marrow and restore healthy blood cells.
Types of Stem Cells used in Stem Cell Therapy
The two main cell types that...

Induced Pluripotent Stem Cells

Induced Pluripotent Stem Cells

Stem cells are undifferentiated cells that divide and produce different cell types. Ordinarily, cells that have differentiated into a specific cell type are terminally differentiated; however, scientists have found a way to reprogram these mature cells so that they dedifferentiate and return to an unspecialized, proliferative state. These cells are pluripotent like embryonic stem cells—able to produce all cell types—and are called induced pluripotent stem cells (iPSCs).
Somatic cells are...

Induced Pluripotent Stem Cells

Induced Pluripotent Stem Cells

Stem cells are undifferentiated cells that divide and produce different types of cells. Ordinarily, cells that have differentiated into a specific cell type are post-mitotic—that is, they no longer divide. However, scientists have found a way to reprogram these mature cells so that they “de-differentiate” and return to an unspecialized, proliferative state. These cells are also pluripotent like embryonic stem cells—able to produce all cell types—and are therefore called induced pluripotent stem...

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Related Experiment Video

Updated: Jul 4, 2026

Isolation and Characterization of Mesenchymal Stromal Cells from Human Umbilical Cord and Fetal Placenta

Isolation and Characterization of Mesenchymal Stromal Cells from Human Umbilical Cord and Fetal Placenta

Published on: April 3, 2017

Human stem cells and their storage: some ethical issues.

Peter Whittaker¹

¹Centre for Economic and Social Aspects of Genomics, Institute for Advanced Studies, County South, Lancaster University, Lancaster, UK. p.whittaker@lancs.ac.uk

|June 3, 2008

Summary

This summary is machine-generated.

This study reviews human stem cell sources and properties, highlighting ethical concerns. Private stem cell banks may offer ethically questionable services, while public banks show greater life-saving potential but require financial stability.

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Area of Science:

Biomedical Science
Bioethics
Regenerative Medicine

Background:

Human stem cells offer therapeutic potential but raise ethical questions.
Umbilical cord blood stem cell banking is a key area of focus.
Variations in ethical validity exist between private and public stem cell banking models.

Purpose of the Study:

To provide an overview of human stem cell sources and properties.
To analyze the ethical considerations associated with different stem cell types and banking practices.
To evaluate the ethical validity and potential impact of private versus public stem cell banks.

Main Methods:

Literature review of stem cell sources and properties.
Ethical analysis of stem cell banking practices.
Comparative assessment of private and public stem cell bank services.

Main Results:

Identified ethical issues linked to various human stem cell sources.
Detailed ethical considerations for umbilical cord blood stem cell banks.
Questioned the current ethical validity of some private stem cell banking services.
Highlighted the life-saving potential of public stem cell banks.

Conclusions:

Some private stem cell banks may not currently provide ethically sound services.
Public stem cell banks present a more ethically viable option for saving lives.
Ensuring the long-term financial sustainability of public stem cell banks is crucial for their effectiveness.