All blood cells and components have vital roles making it necessary that they are replenished continuously; this is achieved by haematopoiesis, where there is a differentiation of a population of pluripotent cells, known as haematopoietic stem cells. HSCs are unspecialised cells that can be differentiated into multiple lineages (figure 1) of mature blood cells (Park et al., 2015). Not only do these cells possess the potential for multipotency they also have the ability of self-renewal, making them
literature. It wasn’t until 1817 that a London doctor, named James Parkinson, wrote a detailed medical essay on this disease. This essay established Parkinson’s disease as a recognized medical condition. He based the essay off of six cases he had observed previously and hoped that it would encourage others to study the disease. No such research was performed until finally, sixty years after Parkinson’s essay was published, a French neurologist named Jean Charcot studied the disease and was the first to
receive an organ transplant (McCredie, 2010). To fulfil the need for organs, transplant specialists use the method of cross-species transplantation, also known as xenotransplantation. Xenotransplantation involves grafting or transplanting live organs (heart, kidney, liver etc.), tissues (skin tissues) or a collection of specialised cells (pancreatic cells, brain cells etc.) from one species to another (i.e. pig to human)(NHMRC, 2002). Along with any risks to the recipient of the transplant, xenotransplant
Final Essay: Multiple Sources, Research Based Argumentative Essay Animal Cloning: Beneficial to Humans Today’s technology develops so quickly that many impossible things become true; the example is cloning technology. Cloning is a process used to create an exact copy of a mammal by using the complete genetic material of a regular body cell. Different from the common propagate, cloning needs only one cell and without sex. Cloning, as of recent years, has become a very controversial issue in society
There are two methods that are used to treat kidney failure; dialysis (using a machine to filter waste products from the blood stream) and kidney transplantation (taking a functioning kidney from another person and surgically implanting it into the body). This essay will explore the advantages and disadvantages of dialysis and kidney transplantation in order to make a judgement on the most effective treatment for renal failure. There are two types of dialysis; haemodialysis and peritoneal dialysis
amphibians. The cells of the Spemann Organiser have a unique ability to alter the surrounding cells’ fates, in a process known as induction. The discovery of the Spemann organiser garnered large amounts of attention, causing Spemann to win the Nobel Prize in Medicine, in 1935, for his work in the discovery of induction. The Spemann organiser, as it has roles in developing the central nervous system, must turn off signals that encourage cells to transform into, for example, skin cells, and to turn on
in stem cell research. They reprogrammed mouse skin fibroblasts by introduction of four transcription factors, Oct3/4, Sox2, Klf4 and c-Myc and generated cells almost indistinguishable from ES cells. They named these cells induced pluripotent stem cells (iPSCs) (Takahashi K., et al., 2006). An year later, James A. Thomson et al. replaced Oct4 and oncogenic c-Myc with Lin28 and Nanog decreasing the risk of cancer formation (Yu J., et al., 2007). We need to take into consideration that cell types are
medical practice known as Ayurveda dating back to as early as 5000 B.C. This kind of medical condition was also mentioned in Nei Jing, the first Chinese medical text from over 2,500 years ago. Parkinson’s disease was first recognized in 1817 when “An Essay on the Shaking Palsy” by James Parkinson was published. Parkinson was a London doctor who first observed the classic symptoms of Parkinson’s disease in three of his
Yihan Chen ENG 109 GA Dr. Karim Hesham Shaker Ibrahim November 05, 2017 Public Argument Essay Many people may think about animal testing after being asked about drug testing. “Animal testing, also known as animal experimentation, animal research and in vivo testing, is the use of non-human animals in experiments that seek to control the variables that affect the behavior or biological system under study,” (Wikipedia). It is easy to think of it because scientists doing research on animal subjects
Philadelphia chromosome, or Ph1. Therefore, this fusion gene mutation affects the maturation and differentiation of the haematopoietic cells (Ciesla 2007, pp. 189). However the introduction of a BCR-ALB particular tyrosine kinase inhibitor, Imatinib has significantly enhanced the survival rate of the patient with chronic myeloid leukaemia (Hochhaus, et al.2015). This essay will briefly describe the diagnosis, treatment and future strategies for chronic myeloid leukaemia. Diagnosis of chronic myeloid