Confocal Microscopy Lab Essay -- Ovarian Ring Canal Medical Technology

Confocal Microscopy Lab Confocal microscopy uses a optical maser that produces excitation idle. This optical maser joyous reflects off of a dichroic mirror and then(prenominal) the laser combust hits twain mirrors that are mounted on motors. The mirrors then scan the laser light across the take. Dye that is found in the sample then fluoresces (Weeks, 2003). Filamin was tagged with a red fluorescent fixture label rhodamine (TRITC) and actin was labeled with the thou fluorescent label fluoroscein (FITC) which was conjugated to the actin-binding fungal toxin phalloidin. The emitted light from the dyes passes back done the mirrors and passes through the dichroic mirror and is focuses into a pinhole. With confocal microscopy, a complete public figure of the sample is neer seen. Only one point of the sample can be ascertained at a time. The essence of light that passes back through is detected by the microscope (Ladic, 1995). The intensity of the red light seen is proportional to the amount of filamin indue and the intensity of the green light seen is proportional to the amount of actin consecrate in the sample of drosophila melanogaster ovaries. Confocal microscopy is able to produce forms that are actually open from interference. The confocal pinhole allows the microscope to reject out of focus fluorescent light (Weeks, 2003). This mode that the image comes from a thin section of the ovary sample. Many thin sections get out be scanned through the sample this allows a clean three dimensional image to be made. A confocal microscope has a few advantages over unceasing opthalmic microscopes. Confocal microscopes have controllable depth of field, the elimination of image degrading reading that is out of focus, and the ability to collect series of data from s... .../ladic/overview.html. Accessed 6 celestial latitude 2004.Robinson, D.N., K. Cant and L. Cooley. 1994. Morphogenesis of Drosophila ovarian vibrancy canals. Deve lopment. 120, 2015-2025.Robinson, D.N, T.A. Smith-Leiker, N.S. Sokol, A.M. Hudson and L. Cooley. 1997. Formation of the Drosophila ovarian ring canal inner rim depends on cheerio. Genetics. 145, 1063-1072Shilling, Kristen (David S. Richard). ovarian cling to cell ring canal formation in wild- shell and insulin house mutant female Drosophila melanogaster.Tilney, L.G., M.S. Tilney, and G.M. Guild. 1996. Formation of actin filament bundles in the ring canals of developing Drosophila follicles. The Journal of Cell Biology. 133, 61-74.Weeks, Eric. 2003. How does a confocal microscope pop off? natural philosophy Department, Emory University. http//www.physics.emory.edu/weeks/confocal/. Accessed 3 December 2004 Confocal Microscopy Lab Essay -- Ovarian Ring television channel Medical TechnologyConfocal Microscopy Lab Confocal microscopy uses a laser that produces excitation light. This laser light reflects off of a dichroic mirror and then the laser light hi ts two mirrors that are mounted on motors. The mirrors then scan the laser light across the sample. Dye that is found in the sample then fluoresces (Weeks, 2003). Filamin was labeled with a red fluorescent label rhodamine (TRITC) and actin was labeled with the green fluorescent label fluoroscein (FITC) which was conjugated to the actin-binding fungal toxin phalloidin. The emitted light from the dyes passes back through the mirrors and passes through the dichroic mirror and is focuses into a pinhole. With confocal microscopy, a complete image of the sample is never seen. Only one point of the sample can be observed at a time. The amount of light that passes back through is detected by the microscope (Ladic, 1995). The intensity of the red light seen is proportional to the amount of filamin present and the intensity of the green light seen is proportional to the amount of actin present in the sample of Drosophila melanogaster ovaries. Confocal microscopy is able to produce images that are very free from interference. The confocal pinhole allows the microscope to reject out of focus fluorescent light (Weeks, 2003). This means that the image comes from a thin section of the ovary sample. Many thin sections will be scanned through the sample this allows a clean three dimensional image to be made. A confocal microscope has a few advantages over regular optical microscopes. Confocal microscopes have controllable depth of field, the elimination of image degrading information that is out of focus, and the ability to collect series of data from s... .../ladic/overview.html. Accessed 6 December 2004.Robinson, D.N., K. Cant and L. Cooley. 1994. Morphogenesis of Drosophila ovarian ring canals. Development. 120, 2015-2025.Robinson, D.N, T.A. Smith-Leiker, N.S. Sokol, A.M. Hudson and L. Cooley. 1997. Formation of the Drosophila ovarian ring canal inner rim depends on cheerio. Genetics. 145, 1063-1072Shilling, Kristen (David S. Richard). Ovarian nurse cell ring c anal formation in wild-type and insulin signaling mutant female Drosophila melanogaster.Tilney, L.G., M.S. Tilney, and G.M. Guild. 1996. Formation of actin filament bundles in the ring canals of developing Drosophila follicles. The Journal of Cell Biology. 133, 61-74.Weeks, Eric. 2003. How does a confocal microscope work? Physics Department, Emory University. http//www.physics.emory.edu/weeks/confocal/. Accessed 3 December 2004