All stem cells, regardless of their source, have three general properties. They are capable of dividing and renewing themselves for long periods, they are unspecialized and they can give rise to specialized cell types. Additionally, under defined conditions, embryonic stem cells are capable of spreading themselves indefinitely.
Main Body A. Malaria always starts with an insect bite. 1. In its salivary glands, thousands of sporozoites wait until the insect penetrates your skin, immediately after invading you they head for the liver, where they quietly enter big cells and hide from the immune system. 2.
After reading about therapeutic cloning, I’ve come to the conclusion that it is no different than what researchers are trying to do with ES cell research. The difference in the process is that the egg is penetrated, without destroying it and the nucleus is removed with the host DNA and replaced with a nucleus from the cell of the donor that requires the ES cell for therapy. At that point the egg is left to develop into a blastocyst using the donor DNA and the process of extracting the inner cell mass to cultivate the stem cells that are genetically compatible with the
James Joyce once said that “mistakes are the portals of discovery.” However, when it comes to the field of genetic engineering, specifically cloning, mistakes, or even discoveries, could turn out to be disastrous. Victor Frankenstein found this out when, in the book Frankenstein by Mary Shelley, he discovers the secrets to creating life which, some might say, led to a horrifying 8 foot tall creature. Nonetheless, cloning has become a lucrative field in the past twenty years since the first sheep was cloned. The process of cloning is essentially extracting tissue from an organism and growing the tissue within a laboratory by means of asexual reproduction.
"(Lee & Schmainda, 2015, para.3). This quote is misleading because it doesn't mention anything about the potency of these sources. The sources that the authors mention are all a lesser potency than fetal stem cells which would limit the number of tissues that could be created. The authors then move on to talk about "reprogrammed cells derived from adults and amniotic fluid stem cells" and that these stem cells "don't pose the risk of triggering tumor growth"(Lee & Schmainda, 2015, para.4). These induced pluripotent cells mentioned are an exciting innovation to stem cell research, but they are very expensive and time consuming to create.
There are three different types of artificial cloning: gene cloning, reproductive cloning and therapeutic cloning. (Fact) Gene cloning produces copies of genes or segments of DNA. Reproductive cloning produces copies of whole animals. Therapeutic cloning produces embryonic stem cells for experiments aimed at creating tissues
Malaria occurs when blood parasites of an infected mosquito are transmitted from human to human. According to an article, “A child dies every minute from malaria in Africa where it is estimated that 9 out of 10 malaria deaths occur” (“World Health,” par. 3). Africa has become known for malaria deaths, but also that it kills an African child every minute. With the majority of Africa’s population being children, they become the victims of most diseases because they have the weakest immune systems. Malaria is known as a leading cause of sickness for children.
Stem cell research has become one of the most controversial current topics of biology. This controversy comes from the idea that these stem cells are only embryonic stem cells, and the only way we get them is from the destruction of human embryos. By definition, a stem cells is an undifferentiated cell of a multicellular organism that is capable of giving rise to indefinitely more cells of the same type, and from which certain other kinds of cell arise by differentiation. Which simply means they are cells found in the human body that can create any other kind of human cell, so under further observation, stem cells could cure many diseases. Despite prior ideas, there are actually two types of stem cells, embryotic and somatic (adult) stem cells.
Artificial tissues such as skin are formed using stem cells in the laboratory. As a case in point, in 1990, Gary Stakemiller, an electrician in Orlando received a skin transplant made of skin that was grown in a laboratory (Ricks). Stakemiller needed this graft because over a month earlier, he received burns on seventy five percent of his body (Ricks). The new skin was produced by using a “starter” medium which grows in a laboratory from cells into usable skin (Ricks). It takes about three weeks to grow each sheet of skin from cells, proteins, and nutrients (Ricks).
Malaria is the most common disease in third world countries with a tropical climate; the disease is caused by a parasite called Plasmodium, which is transmitted through the bites of infected mosquitoes. In the human body, the parasites multiply in the liver, and then infect red blood cells. Symptoms of malaria include fever, headache, and vomiting, and usually appear between 10 and 15 days after the mosquito bite. If not treated, malaria can quickly become life-threatening by disrupting the blood supply to vital organs. In many parts of the world, the parasites have developed resistance to a number of malaria medicines.