Sertoli cell

It is well known that plants contain an abundant source of medicinal properties. It has been estimated that between 25-50% of current prescription pharmaceutical drugs available are derived either directly or through semi-synthetic modifications of natural occurring substances aka the use of bioactive molecules. 
 Stated in the Cancer Therapy ; Fabricant and Farnsworth (2001), reported that 80% of 122 plant derived drugs were related to their original ethnopharmacological purposes.
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It is beyond a doubt that the founding fathers could ever conceive an American society like the one we are living in today. The discovery of the structure of DNA marks a significant landmark in medical history. This has open the doors to a new realm that deepen our understanding of biological systems and promises a future that once was an abstract idea in science fiction novels. A challenge that my generation is facing is answering whether genetic modifications are ethical. Despite the…

hypersensitivity response to sequestered living, dying or dead ova, that are trapped in tissues during the peri-intestinal migration or after embolization in the liver. Soluble egg antigen (SEA) and proteolytic enzymes released by ova provoke granulomatous cell-mediated immune response, with recruitment of eosinophils, granuloma formation and liver fibrosis (Cheever et al., 2000; Wynn et al., 2004). In schistosomiasis, Th2-type cytokine production becomes predominant eight weeks post infection,…

growth regulation. Following these results, what effects on cell growth would happen if Hpo was mutated so that it could not function was tested. To do this, wild type fly eyes were compared to flies that exhibited the HpoMGH1 mutation. The results showed that the flies in which Hpo exhibited loss of function showed a slight increase in number of cells compared to wild type (Figure 3A and 3B). To see how this mutation would affect cell growth and density in fly eyes if coupled with either a loss…

The Structure and Function of Monomeric Actin Caroline Lussier The Protein Data Bank is a free, updated archive and resource containing information about the structure of macromolecules including proteins and nucleic acids. This material allows users to better understand and compare the building blocks of life. More specifically, this database can help users to draw conclusions about how large molecule conformations help to determine the direction of drug development. The Protein Data Bank has…

compacted into chromosomes to fit into the nucleus. As well as storing genetic material and information in the nuclei, DNA has many different functions. One of DNA’s main functions is DNA replication, where DNA is copied in order to form two daughter cells of DNA. During DNA replication, DNA helicase causes the hydrogen bonds between the complimentary base pairs to break and the double helix to unwind into two strands. DNA polymerase then attaches to the start of each strand, acting as a…

All living things are made of cells. One part of the cell is the cell membrane which allows molecules like oxygen and water in and out of the cell. The red blood cell is the most abundant cell in the human body whose job is to transport oxygen from the lungs to the cells of the body. Something unique to the red blood cells is that they can change shape. This allows them to squeeze through capillaries without breaking. They also change shape in response to the environment. My task is to design…

from the 17th century and the scientists from the 21st are partaking in some form of genetic engineering. According to the Union of Concerned Scientists (UCS), genetic engineering refers to “a set of technologies used to change the genetic makeup of cells, including the transfer of genes within and across species boundaries to produce improved or novel…

projections on cells lining in the inner ear. These projections are called stereocilia, which will bend in response to sound waves and transmit signals to the brain. SANS plays an important role in the retina as well. It aids in formation and maintenance of the specialized retinal cells that detect light and color, photoreceptor cells (USH1G Gene).…

infection. The processes of tissue regeneration include inflammation, wound repair, and remodeling. However, regenerating limbs is a more complex process that involves creating new cells. Flatworms Planarians have the ability to regenerate into a complete animal from tiny fragments of their body in…