Sertoli cell

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  • Chronic Heat Stress

    There was no significant difference in testosterone concentration between the two groups, only numerical differences; testosterone levels did increase as the months passed and coming closer to the breeding season. Cortisol levels were also not different throughout the study except for August and October. Testicle size was different between the groups with the HS group having severe testicular degeneration at the germ line with no impact on somatic (sertoli and leydig) cells. It was concluded that chronic heat stress during the non-breeding season impacted developing ram lambs negatively, with impairment of the testicular germ line without any effects in testosterone and cortisol concentrations. Mean testicular weights were significantly different with the indoor having an average of 151g and the outdoor group having an average of 90g. At the microscopic level, the testicles from the HS group showed no clear spermatocytes, spermatogonia, or…

    Words: 1661 - Pages: 7
  • Analysis Of Your Inner Fish By Neil Shubin

    Neil Shubin’s documentary series “Your Inner Fish” explores the relationship between humans and all other living organisms. Shubin delves into human evolution to uncover similarities that connect humans with the world around them. The anatomist studies fossils, embryos, and various other parts to compare humans to fish, reptiles, and primates. Shubin challenges the common beliefs about evolution by recognizing the corresponding features between humans and seemingly unrelated organisms. The…

    Words: 1811 - Pages: 8
  • Human Cloning: The Characteristics Of Humans?

    the chromosomes. Clones come from a scientific process called the somatic cell nuclear transfer or SCNT. During this process, scientists remove the chromosomes from the egg cell and replace them with the nucleus of a somatic cell which contains two sets of chromosomes. Since the nucleus of the somatic cell comes from a human who already displays genetic variation from their mother and father, the clone will receive both of their sets of chromosomes from one cell, and not from both the egg and…

    Words: 1106 - Pages: 5
  • Animal Testing In Medicine

    studies that can contradict predetermined concepts. Therefore, researchers can be studying a peculiarity of some specie that can be resulted by many different factors. Trying to apply this new discovery in humans can be catastrophic as these new concepts cannot be applicable to human beings. For example in 1960’s, experimentation on animals showed that the tobacco did not cause lung cancer, although it caused some minor issues. This research was used for years as an argument to delay the…

    Words: 1006 - Pages: 4
  • Animal Cell Process Lab Report

    headquarters, and with that our micro-V96 craft was propelled towards the cell membrane for the first leg of our journey to investigate the process of Protein Synthesis in a eukaryotic animal cell. The cell membrane is a delicate wall of phospholipid molecules, consisting of hydrophilic heads and hydrophobic tails that swayed and looked like a mosaic. Our craft could not enter the cell directly through the semi-permeable membrane as it consisted of a negatively charged polysaccharide which was…

    Words: 1419 - Pages: 6
  • Persuasive Essay On Gm Foods

    they are developed because there is some perceived advantage either for the producer or consumer of these foods. This is meant to translate into a product with a lower price, greater benefit in terms of durability or nutritional value. How can DNA be moved from one organism to another? • Find an organism with the desired trait • Isolate the gene sequence that codes for the desired trait • Insert the gene sequence into the genome of the plant cell • Allow the genetically altered cell to grow…

    Words: 759 - Pages: 4
  • Should Human Cloning Be Banned

    Cloning is the production of one or more individual organisms that are genetically identical. The copied organism, which has the same genetic code as the original, is called a clone. In the last two decades, Cloning technology has been becoming mature, and been broadly applied on agriculture, human health, and many fields. Breeding by cloning is able to being directly reproduce an animal with a desirable set of genetic traits, the world 's most famous clone is Dolly the sheep that is the first…

    Words: 719 - Pages: 3
  • Eukaryotes: A Genetic Analysis

    For all organisms, prokaryotes and eukaryotes, they all must regulate the specific genes that are expressed at any given time (Campbell 365). Each organism continuously turn on and off genes in response to external and internal environmental signals. The regulation of gene expression is especially important in multicellular organisms since it is essential for the different types of cell to have their own cell specialization (Campbell 365). In order for each cell to do it’s given role, they each…

    Words: 1023 - Pages: 5
  • Ethical Implications Of Human Cloning

    reproductive cloning (NHGRI, 2015). The type of cloning that gets the attention from the movie industry, and this paper, is reproductive cloning. Reproductive cloning is the process in which a whole organism is copied. This is achieved by removing a mature somatic cell from the organism that is to be copied, and transferring that cell’s DNA into an enucleated egg of the same species. After the egg has matured to an early embryonic phase in vitro, it is implanted into an adult female to grow…

    Words: 790 - Pages: 4
  • Plant Cell Experiment

    understand the cell. The students will understand the characteristics of the Cell. 2. Describe background information from your lab manual or other references? Amylopast: An organelle in some plant cells that stores the waste of the cell. Cell membrane: thin layer of protein outside of cell that protects the whole structure. Cell Wall: can be found only in plant cells, provides more protection to the cell. Centrosome: helps the cell divide. Cytoplasm: organelles are located within this…

    Words: 992 - Pages: 4
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