Samantha Rogers & Sarah Grill July 6‚ 2015 Stem Cell Biology and Regenerative Medicine Analyzing the Effects of PZQ on Planarian Head Regeneration Abstract This paper focuses on the question of whether or not the drug PZQ (Praziquantel) has an effect on the double-headed formation of planarians. As the rest of the report will describe in more detail‚ we used multiple concentrations of PZQ reconstituted in 95% ethanol to observe its effects on planarians cut in a shape that promoted double headed
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Science has continuously provided the pathway towards innovative solutions to solve the issues of the 21st century; however‚ in order to attain such solutions the question of what is morally acceptable or wrong comes into play. Embryonic stem cell research has faced the negative spotlight for many years. The false misconceptions surrounding stem cells is clouded by the idea that they are acquired through intentionally killing a life of a potential human being. These false statements facilitated by
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The advancement in technology has lead to the treatment of many diseases. Stem cell research has provided hope and has brought optimism among the scientists and doctors in curing the patients who suffered or died due to the once called "untreatable" diseases decades ago. Stem cells are the ones which can develop into any type of a body cell including the cells of blood‚ liver‚ brain‚ muscles‚ and many more. They are found in adult bone marrow‚ embryos‚ fetuses‚ and blood from the umbilical cord (Bailey
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or Alzheimer ’s‚ although at present it is impossible to tell whether this will happen within a few years or even within our lifetimes. Furthermore‚ Scientists also say that by studying stem cells they will learn more about reproductive and cell biology and can also use this knowledge for drugs testing and development. Although‚ there is some debate among scientists about this. Broadly speaking‚ there are three different types of stem cells: embryonic stem cells and adult stem cells (including stem
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(Updike and Strome‚ 2010). It is thought that these germ granules influence the totipotency and identity of germ cells. (Hanazawa et al.‚ 2011) Here we address whether the depletion of ribosomal protein and translation factors (RPTFs) during early developmental stages result in the expression of germ granules in the larval intestine. We hypothesized that this phenotype would be common to the depletion of other RPTFs. After testing 93 RPTFs‚ our observations suggest that the somatic misexpression of germ
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WHAT ARE STEM CELLS? Before I can explain the cons of stem cell research‚ I must explain what stem cells actually are. Stem cells are defined as essentially the beginning cells of a human being‚ which are capable of becoming all or many of the 210 different kinds of tissues in the human body. 1 These cells divide‚ generating two "daughter cells"‚ one of which will become something new and another which will replace the original cell. That is where the term "stem" comes from‚ meaning stem cells
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doesn’t fulfill or master a stage adequately. Focusing on stage one and two of Erikson’s stages we see how the basic strengths of hope and will are extremely important in personality development. The first stage in Erik Erikson’s psychosocial developmental theory is Infancy‚ which is from birth up until one year old‚ and is similar to Freud’s Oral stage. Erikson believed infants are taking their environment in with their senses and with this they learn to either trust or mistrust the world around
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Penny Jones Dr. James Mayall Ethics in Action 01 April 2010 The Ethical Implications of Embryonic Stem Cell Research Stem cell is defined by Webster’s New World Medical Dictionary as‚ “one of the human body’s master cells‚ with the ability to grow into any one of the body’s more than 200 cell types (Webster’s New World Medical Dictionary‚ 2000).” The ethical implications of stem cell research; particularly with regards to embryonic stem cell research‚ has become an increasingly popular topic
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Stem Cell Controversy Stem cells were first isolated and cultured in November of 1998 and have been surrounded with much debate and controversy since day one. “Although the ethical debates have been mostly static and have closely mimicked the ethical debates over abortion‚ the political determinations concerning federal funding of stem cell research have gone through numerous evolutions in the years since the first hESCs were isolated and cultured” (Saltzberg 505). Research is currently being
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grouping smaller taxa/ taxon in larger‚ more inclusive taxa ( a hierarchial position (s) within a taxonomy) c. Artificial classification classes according to superficial resemblance (structure‚ color‚ habitat‚ etc. ) d. method used in zoology and biology is called natural classification e. Law of priority ( after a species has been described‚ defined‚ and illustrated) : any identification of a previously named species takes second priority‚ even if the new name if “more correct” f. rules/ factors
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