Laukemia Term Paper Example | Topics and Well Written Essays - 1250 words

Laukemia - Term Paper Example This factor does not help the normal blood cells to carry out their work. Leukemia begins in the bone marrow and later spreads throughout the body. Mostly, a bone marrow test is carried out to identify leukemia. Both adults and children can develop this disease. â€Å"Although leukemia often is thought to be a childhood disease, in fact, the disease strikes 10 times as many adults as children.† (Leukemia Facts & Figures, n.d.) Though exact reason for a person to develop leukemia is not known, many significant clinical trials have been done on the development of Leukemia. Every year, around 250,000 people are being identified to have developed leukemia and over 200,000 of them die (Vogt, 2010). The treatment methods for this disease are surgery, radiation, chemotherapy, hormone therapy. Though there are many tests to diagnose leukemia, the diagnosis itself may be delayed due to delayed symptoms or symptoms which resemble other conditions. The diagnosis of leukemia may vary acco rding to the kind of leukemia that has developed in a person. Statistics say that â€Å"in the United States about 2,000 children and 27,000 adults are diagnosed each year with leukemia† (Leukemia Information, 2011). Survival rates have increased considerably in the years before due to improvements in treatment. Symptoms of this disease may not be noticeable many times, particularly in chronic leukemia, but people may get symptoms like tiredness, inexplicable weight loss, and fever at times. Other symptoms of leukemia like headaches, joint pain, and pain in the belly due to enlarged spleen may also be noticed. Types of Leukemia Leukemia has been divided into various groups. Leukemia is a term covering four forms of diseases of the blood and bone marrow. These include â€Å"acute lymphocytic leukemia and acute myelogenous leukemia†. These two types of leukemia progress rapidly while the other two types, â€Å"the chronic lymphocytic leukemia and chronic myelogenous leu kemia, progress slowly† (Leukemia, n.d.). Acute leukemia exemplifies swift increase of immature blood cells. Instant and necessary treatment is required in acute leukemia due to this fast development and growth of the abnormal cells. The acute form of leukemia is most common in children. Chronic leukemia is found in those that progress relatively slow when compared to acute forms. The chronic leukemia cells are abnormal white blood cells that take many months or years to progress. The cells are produced much more in number than normal cells. Chronic leukemia is monitored for a certain amount of time before initializing treatment so as to make sure the maximum usefulness of therapy. This form of leukemia is more often found in elderly people but occurs in any age. Leukemia is further divided into various types (What is Leukemia? What causes Leukemia, 2009): 1. Acute lymphocytic leukemia: This form of leukemia is more common in young children. This disease is also found in older people who are 65 years and above. The standard treatment for this type would be chemotherapy and radiation. The rate of survival is 85% in children and 50% in adults. 2. Chronic lymphocytic leukemia: This is most frequently found in adults over 55 years of age. This type is seldom found in children. The rate of survival is five years and is found in adults. It is not curable. 3. Acute myelogenous leukemia: This form is more easily found in adults than children and in men than women.

Anthropology 11 Essay Example | Topics and Well Written Essays - 1000 words

Anthropology 11 - Essay Example He illustrates his stand with the examples of the theories surrounding the evolution of man by starting with the rather shocking theory that we all as humans originate from the continent of Africa This topic is very important to biological and physical anthropology because it explains why we are all so different racially and genetically and seeks to explain with the help of many theories whether Darwin's theory is actually right in saying that as humans we have only recently evolved from apes. He compares the "originate in Africa thesis" with the "out of Africa thesis" where he is trying to explain the origin of our genetics and evolution. The author uses the technique of taking up many hypotheses and theories and assessing their truth and in the end he gives his verdict in the favour of the theory given by Darwin, the Out of Africa hypothesis. " This theory maintains that modern humans evolved in Africa and then spread around the world. Boiled down to its essence, the hypothesis states that modern humans are both relatively recent (100,000 to 200,000 years old) and African in origin. A major prediction of this hypothesis is that the earliest remains of modern humans will be found in Africa, dated to an appropriate time period." The author goes on to discuss the " Multiregional hypothesis" which he argues depicts that we as modern humans evolved from different locations and hence our racial and genetic differences. According to this school of thought "these regional populations evolved along parallel paths and reached modernity at roughly the same time. Because the populations were largely isolated from one another, they developed distinctive regional features, which people recognize today as "racial" differences." ( Multiregionalists believe that Neandertals, originate from the European continent.) He then goes on to say how there are three different recent researches go in the favour of the Darwinian view and oppose the Multiregionalists view which he addresses one by one as: The east african population has been found to be so diverse that the genetic composition of the population" shows that these lineages are very diverse and humans did evolve from these areas.Most of the worlds oldest lineages were found there d 170,000 years ago. Secondly because of the discovery of the "African Herto skullsthe Herto specimens (are) the earliest modern Homo sapiens yet found-direct ancestors of people living today." He concludes that the Neandertals' DNA was not closer to that of the modern Europeans. "The work was a strong blow to the theory that humans evolved in several places simultaneously. "Neandertals cannot represent a regional European transition from Homo erectus to modern Homo sapiens" 4. Did the author address any contrary evidence or the opinions/work of others that run counter the author(s) claims Although he devotes his entire discussion to proving the multiregionalists wrong he does refer to the possibility of " mtDNA contamination from researchers or others who have handled the fossils" but he is quick to provide evidence to suggest otherwise. He does give the multiregional theory its fair share of discussion though.. 5. What were the strengths and/or weaknesses of the author(s) argument