What Are Stem Cells?

Stem cells serve as the basis for new regenerative medicine. There are two types of stem cells: embryonic stem cells and adult stem cells. Embryonic stem cells begin as embryos. This means that a sperm cell fertilizes an egg cell creating the embryo. As the embryonic stem cells begin to develop and divide, the cells begin to accumulate in a cell culture, or colony.

Others develop into muscle cells that can contract and also into nerve cells. Because they have the potential to become such a wide variety of specialized cells, embryonic stem cells are described as pluripotent. Plurip.0otency is one of two key features of embryonic stem cells. The second key feature of embryonic stem cells is their ability to divide or self renew for an indefinite period while retaining their undifferentiated, pluripotent state. As the cell mass grows, the population can be further expanded by growing in larger tissue culture flasks. An unlimited number of undifferentiated, pluripotent stem cells can be produced (Sumanas Inc. 2007).

A stem cell is defined as a cell that can change into a different type of cell. Stem cells are different from other cells because from the start they do not have specialized functions. Embryonic stem cells are found within the blastocyst (embryo), which is just a tiny package of

First of all an understanding of what a stem cell is, where it comes from, and the significance of it's medical potential is essential. Stem cells are the "master cells" that form the human body or whatever other animal it is from. Stem cells can be extracted from adult tissues, bone marrow, umbilical cord blood ( ), and embryos in the blastocyst stage. Although scientists have found ways to manipulate the stem cells from adult sources into other types of cells, they claim that they are less capable of deriving the desired tissue and are not "biologically equivalent" ( ) to stem cells extracted from embryos.

There are two main types of stem cells. The first is the Embryonic stem cell. Embryonic stem cells are obviously found in embryos. Human embryonic stem cells are generated by transferring cells from a preimplantation-stage embryo into a plastic laboratory culture dish that contains a nutrient broth known as culture medium. Many people are against embryonic stem cell use because by extracting stem cells from an embryo it destroys it. Also opponents of the research argue that embryonic stem cell

Stem cells are cells that have the potential to become almost any cell in the human body, during the early developments of life. Stem cells have the possibility to generate all of tissues within a human as well. Each stem cell can either stay a stem cell or become a more specialized cell. The stem cells that are unspecialized are capable of renewing themselves or possibly being induced to become organ specific cells or tissue cells with special functions. Most stem cells have a constant supply to replace other cells that are injured, diseased, or even aged.

All the human embryonic stem cell lines currently in use come from four to five-day-old embryos left over from in-vitro fertilization (IVF) procedures. In IVF, researchers mix a man 's sperm and a woman 's eggs together in a lab dish. Some of those eggs will become fertilized. At about five days the egg has divided to become a hollow ball of roughly 100 cells called a blastocyst which is smaller than the size of the dot over an “i”. ("Myths and Misconceptions About Stem Cell Research.")

Many people have argued that pornography is a form of artistic expression, protected by the First Amendment of the Constitution, others feel there is a distinct line between art and “porn” (Pornogrpahy). Pornography is made to provide sexual pleasure to anyone who hears, sees or reads it, it involves erotic acts. Pornography could be talking, “acting,” or anything that may sexually stimulate someone. Pornography is also, the portrayal of sexual activities and it comes in the form of magazines, movies, videos, and more. Pornography is often seen to overstep the bounds of the First Amendment and misrepresent what is means by freedom of speech. Pornography isn’t something that everyone can agree on. For example, feminist are one group of people have a variety of feelings and beliefs towards pornography. While feminist usually share the same way of thinking this is one topic that causes a major division between them. Disagreeing to agree is a common compromise that people face in life, but in the case of pornography feminist can not seem to do so.

There is a variety of sources from which stem cells may be obtained. These sources include (but are not limited to): human embryos, the blood from the umbilical cord, and even various organs from full grown adults. However, as I have mentioned before, the controversy emanates from the fact that human embryos are the preferred source for stem cells, due to their vast regenerative capabilities. While it is possible to safely harvest stem cells from full grown adults (adult stem cells), the stem cells harvested would lack the pluripotency (ability to become any specialized cell) of embryonic stem cells; whereas embryonic stem cells can differentiate into any cell, adult stem cells can only become specialized cells from the tissue in which they reside (multipotency). For example, hematopoietic stem cells— found in the bone marrow of adults— can become all mature blood cell types, but cannot become muscle cells or any other type of cell found in the body. Similar to adult stem cells, most of the other sources

Until two scientists isolated the first embryonic stem cells in 1981 (stemcell.child), the controversy in embryonic stem cell research was never discussed. For, an embryo was never able to survive outside of the womb until then; however, today, this topic is widely discussed among ethicists, medical professions, politicians, and more for several reasons. On one side of the argument, embryonic stem cells have the capability of repairing damaged tissue, and with further research it is believed that these cells will be able to cure or provide relief to several diseases and disabilities seen today. On the other hand, embryonic stem cell research is seen as morally unjust because it is seen as the destruction of a potential human life

For starters, a stem cell is an undifferentiated cell that is capable of regenerating itself or becoming induced into a specific tissue or organ for specialized functions under certain physiological functions. All stem cells have the following three things in common: they are capable of renewing and dividing themselves over an extended period of time, they are not specialized, and they are able to give rise

Korean culture is something unique and distinct from any other Asian culture of its kind. Koreans are known to be go getters, entrepreneurs, and always seem to go after whatever they want to sustain a truly happy and fulfilling life. As humans sometimes forget, we are all sharing one single planet. Whether we live down the road from one another, or a million miles away, our individual cultures say a lot about who we are and where we came from. What’s important to recognize is the need to experience other cultures from your own.

Embryonic stem cells which can be taken from the embryo. According to the National Institutes of Health (2016), “Embryonic stem cells are derived from embryos. Most embryonic stem cells are derived from embryos that develop from eggs that have been fertilized in vitro and then donated for research purposes with informed consent of the donors.” These cells can develop and form any tissues in a living organism. The adult stem cells are cells of the body. The National Institutes of Health 92016) states “The adult stem cell can renew itself and can differentiate to yield some or all of the major specialized cell types of the tissue or organ. The primary roles of these cells are to maintain and repair the tissue in which they are found.” The adult stem cells are found in many tissues and organ systems in children and adults. Lastly, the induced pluripotent stem cells are genetically modified and reprogramed cells to embryonic stem cells. They are divided and grown in a laboratory

Stem cells are undifferentiated cells within the body that are defined by their ability to self renew and differentiate into specialized cells (1). Stem cells function in body tissues as a repair mechanism, with an unlimited ability to divide and restock cells as needed by the body. Each time a stem cell divides, the new cell formed can either remain a stem cell or differentiate into a specialized cell, such as a brain cell. Traditionally, there are two main types of stem cells: human embryonic stem cells [HESCs] and adult somatic stem cells. In 1981,embryonic stem cells were the first type of stem cell to be discovered (2). Embryonic stem cells originate from four-to-five day old embryos formed during the blastocyst phase of embryological development. The embryos used to derive stem cells are usually extras that were created using in vitro fertilization and not implanted (2).

When someone asked me what I thought a crisis was, the first examples that came to my mind was Hurricane Katrina, September 11, 2001. Once I began to think more of what the definition of a crisis would be, I know that it is the reaction of how someone reacts to a crisis event. Other examples may be suicide, homicide, domestic violence, and different traumas that one experiences. Once we began our discussions in class, I realized that a crisis and how one deals with a crisis, whether it is a natural, manmade or personal, effects each person differently. How that person handles the crisis, may have short term or long term effects that may lead to a mental illness. That is one of the points that I found very interesting, among other information we learned in class, along with the various speakers that we had.