Stem Cells

Tissue engineering

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An adult

Adult stem cells are found in the bone marrow, they are also called multi-potent stem cells, i.e. they can only differentiate (develop) into 4 main types or cells (nerve, blood, cardiac and white blood cells)

They are not as versatile as embryonic stem cells as they pluripotent i.e. they can differentiate into the 3 germ layers, mesoderm, endoderm, ectoderm. Basically they 3 groups of somatic (body) cells

How much does stem cell research cost?

$4 trillion per year.

Pluripotent

Plant cells have mitochondria just as animals cells do. These provide the energy for the production of cell walls.

Cellulose is the substance that makes up most of a plant's cell walls. Plant cells make their own carbohydrates that they use for energy and to build their cell wall.

in the bones

in the digestive tract(APEX)

A micropipette (very small needle) is inserted into the embryo to extract the stem cells while the doctor or scientist looks through a microscope so they can see it. Most embryos are left over from fertility treatments.

Heart

Stem cells are located in the bone marrow sometimes in different places.

There is some indication that stem cells can make a modest increase in penis size but it's expensive and must be done by a clinic that specializes in this. There are always risks associated with invasive procedures and keep in mind the average erect penis is 5.16 inches long with a girth (distance around) of 4.59 inches. The range of size around these sizes is small. Only five men in a hundred are larger than 6.3 inches. So if you've been looking a the guys on porno websites they're way outside normal limits.

Stem cell preservation is used as a possible method of cloning. It is also a method that may allow scientists to grow organs to replace failing organs in medical patients.

They can make only their own type of

Red blood cells are eukariotic. Bacterial cells are prokariyotic.

In the digestive tract

Lines that Divide The Great Stem Cell Debate - 2009 is rated/received certificates of:

USA:Approved

no it can't be used for tissue

Adult stem cells are useful when you want to make cells of the same tissue, as there is not much controversy about using them. Embryonic stem cells however are amazing as in the first few cell divisions they can turn into any type of cell, even a whole organ! However there is lots of ethical issues surrounding the use of these.

Stem cell treatment may be ineffective for conditions where the underlying issue is not related to cellular damage or degeneration, such as genetic disorders caused by inherited mutations. Additionally, acute conditions like infections or injuries that can be resolved by the body's natural healing processes may not benefit from stem cell therapy. Furthermore, certain types of cancers, where stem cells could potentially promote tumor growth, are also unlikely to be treated effectively with stem cell interventions.

The skin originates from the ectoderm layer of the embryonic germ cells. During development, the ectoderm gives rise to the epidermis (outer layer of the skin) and its appendages such as hair follicles, sweat glands, and nails.

Skin is primarily a physical barrier that keeps the outside world 'out' (protection) and the inside tissue 'in' (homeostasis). It also serves to control moisture (hydration), temperature, sensation, mechanical damage (healing), excretion and gas exchange. It also serves as a home to most the microorganisms that we host! These non-threatening 'bugs' stop the nasty bugs from infecting (colonizing) us, feed off our excretions and also provide some limited protection from radiation and mechanical injury.

Some people argue against the use of embryonic stem cells for medical research primarily due to ethical concerns surrounding the status of the embryo. They believe that human embryos possess moral value and that using them for research leads to the destruction of potential human life. Additionally, some opponents advocate for alternative research methods, such as adult stem cells or induced pluripotent stem cells, which do not involve the same ethical dilemmas. These views reflect broader debates about life, personhood, and the implications of scientific progress.

Undifferentiated mesenchymal cell