Stem Cells

Robert Hooke was observing thin slices of cork under a microscope when he discovered cells in the 17th century. Stem cells were not discovered until much later, in the 20th century.

The number of connective tissue cells in a given heart increases from 1 x 10(9) just after birth to 5 x 10(9) in adults, reaching its maximum of 10 x 10(9) in extremely hypertrophied hearts. The number of heart muscle cells is 2 x 10(9) in normal hearts of children and adults, and may rise to 4 x 10(9) in excessively hypertrophied hearts.

In the adult intestines, the stem cells that generate new cells to protect the tissues are located in the intestinal crypts. These stem cells are found at the base of the crypts and continuously divide to produce new cells that migrate upwards to replace the older cells that line the intestinal surface.

One type of technology that uses stem cells to grow body parts is regenerative medicine. This field focuses on using stem cells to repair, replace, or regrow damaged or diseased tissues and organs in the body. This has the potential to revolutionize healthcare by providing new treatment options for a variety of medical conditions.

• Abortion
• ADD/ADHD
• AIDS
• AIDS denialism
• Alcoholism
• Allergy - causes of.
• Allopathic medicine
• Alzheimer's disease
• Alternative medicine and closely related issues
• Anencephaly
• Assisted suicide
• Aspartame
• Aspartame controversy
• Asperger's syndrome and Autism
• Astrology as a "science"
• Bates method
• Bioethics
• Biology and sexual orientation
• Birth defect
• Black hole information paradox
• Blood transfusions
• Cancercures
• Cesarean section
• Chakra
• Chiropractic
• Chromosome
• Circumcision
• Cloning
• Cochlear Implant
• Cold fusion
• Conjoined twins
• Creationism
• Cryonics
• Depleted uranium
• Depression
• Disability
• Drugs
• Dyslexia
• Ebolavirus
• Electrical sensitivity
• Eugenics
• Euthanasia
• Evolution
• Family Planning
• Female genital cutting
• Flat Earth Society
• Genetic Engineering
• Genetically modified foods (or GM food(s))
• Genderdifferences.
• Gypsies as a race.
• Heredity
• Heritability of IQ
• HIV - virus that causes AIDS.
• HMO - US health care coverage.
• Hodgkin's Disease
• Homeopathy
• Human cloning
• Human evolution debate
• Human longevity
• Huntington's disease
• Influenzastrains like the H5N1 virus or bird flu
• Intelligent design
• IQ and the Wealth of Nations
• Jewish peopleas a "race".
• Kegels
• Lactose intolerance as a genetic inherited trait
• Life extension
• Lupus
• Master race
• Medical torture
• Mental illness
• Mental retardation
• Mind control
• Mucoid plaque
• Nutrition
• Obesity
• Organ donorand transplants
• Overpopulation
• Paternity testing
• Pharmaceutical industry in the USA
• Plutodemoted as a planet
• Poppers (the use of alkyl nitrites as a drug)
• Premature birth
• Prenatal care
• Psychiatry
• Raceand science.
• Race and intelligence
• Recapitulation theory
• Schizophrenia
• Self-mutilation
• Sexually transmitted diseases
• Smoking and tobacco
• Sperm donorand Egg donor
• Stem cell research
• Subluxation
• Surrogate mother - child custody battles
• Tay-Sachs disease
• Test-tube babies
• Thiomersal
• Transgendered, Transsexual, and BIIDpersons
• Twin paradox
• Universe - such as the Big Bangtheory
• Vaccination
• Veganism and Vegetarianism
• Woman and female health issues (see pregnancy, menopause, breast cancerand ovarian cancer).

Adult stem cells have more limited differentiation potential compared to embryonic stem cells, making them less versatile for therapeutic cloning. Additionally, adult stem cells are often harder to manipulate in the lab and may not replicate as easily as embryonic stem cells. However, adult stem cells have the advantage of being less likely to be rejected by the recipient's immune system, which can be a benefit in certain therapeutic applications.

Yes, specialized cells are made from stem cells through a process called differentiation. Stem cells have the ability to develop into different types of cells, such as muscle cells, nerve cells, or blood cells, depending on the signals they receive from their environment. This process allows stem cells to contribute to the development, growth, repair, and maintenance of tissues in the body.

They can only produce cells that are like themselves.

Stem cells have the ability to differentiate into various cell types, including nerve cells. When injected into the damaged area of the spinal cord, stem cells can help regenerate and replace lost nerve cells, potentially restoring function and alleviating paralysis. Additionally, stem cells can help reduce inflammation and provide growth factors that support tissue repair in the nervous system.

Cacao plants have woody stems. They are perennial trees that grow in tropical regions and are cultivated for their seeds, which are used to produce cocoa and chocolate.

The stem "urb" is derived from the Latin word "urbs," which means city. It is commonly seen in English words relating to cities or urban areas, such as urban, suburbs, and urbane.

Pre-embryonic development is associated with processes including fertilization, cleavage, and formation of the blastocyst. During this stage, the zygote undergoes division and differentiation to form the blastocyst that will later implant into the uterine wall for further development into an embryo.

Scientists study stem cells in the field of regenerative medicine to investigate their potential to repair damaged tissues. They are exploring how stem cells can differentiate into various cell types to replenish or rebuild damaged tissues and organs in the body. This research holds promise for treating various diseases and injuries that currently have limited treatment options.

While Stem Cells can cure some types of cancers, like Lukemia, it is still possible for it to come back. The biggest problem with storing a sibling's stem cells is that if your first child is pre-disposed to cancers, there is a chance your second child is as well, which basically means the stem cells will not help the particular problem you are trying to fix.

Embryonic stem cells present the greatest ethical problems as they are obtained from embryos, which leads to debates about the moral status of the embryo and concerns about potential destruction of human life. Additionally, induced pluripotent stem cells, which are created by reprogramming adult cells, also raise ethical considerations due to issues related to genetic manipulation and informed consent.

Valve stem seals help prevent oil from leaking into the combustion chamber through the valve guides. They also help control the lubrication of the valve stems and guide them properly within the cylinder head.

The main source of embryonic stem cells is embryos that are created in a laboratory through in vitro fertilization techniques. These embryos are usually donated for research purposes with informed consent from the donors. Embryonic stem cells are pluripotent, meaning they have the ability to differentiate into all cell types in the body.

because they are taken from embryos. The embryos used in these studies were created for reproductive purposes through in vitrofertilization procedures. When they were no longer needed for that purpose, they were donated for research with the informed consent of the donor.

Stem cells have the ability to differentiate into different cell types, but external signals from the surrounding environment influence this process. Factors such as growth factors and neighboring cells play a role in directing stem cell differentiation. If the signals are not present or are disrupted, stem cells may not differentiate fully into the desired cell type.

Well, there are controversial views with regards to stem cell research.

Some would say that stem cell research is important as it has the potential to save many lives and greatly improve our medical knowledge.

However, many would argue that it is 'playing God' and that we should not be using stem cells, as it is not natural - not how things were meant to be.

Nobody knows how the mechanisms involved with stem cells really works. The thing we do know is that when the right kind of stem cell is in the area where is finds familiar that it can produced tissues associated with that part of the body.

Embryonic stem cells are typically obtained from excess embryos created during in vitro fertilization procedures with informed consent from the donors. These embryos are usually donated for research purposes and are not created for the sole purpose of harvesting stem cells.

STEM (Science, Technology, Engineering, and Mathematics) as an educational concept was not made by a single person, but rather evolved over time as a way to promote interdisciplinary learning in these key areas. The term is commonly attributed to the National Science Foundation in the United States in the early 2000s.

• Embryonic stem cells: Can develop into any cell type in the body, providing great potential for regenerative medicine.

• Induced pluripotent stem cells (iPSCs): Can be generated from a patient's own cells, reducing the risk of rejection in transplantation.

• Adult stem cells: Can be harvested from the patient's own body, avoiding ethical concerns associated with embryonic stem cells.