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Date/Time Thumbnail Dimensions User Comment; current: 12:22, 6 April 2014: 3 min 52 s, 480 × 360 (7.38 MB): Jacopo Werther == {{int:filedesc}} == {{Information |Description = Step-by-step video and audio instructions on how to prepare a wet mount specimen of eukaryotic animal cells; specifically Human epithelial cells from the inside of the cheek.
A drop of cell culture is placed in the space between the chamber and the glass cover, filling it via capillary action. [1] Looking at the sample under the microscope, the researcher uses the grid to manually count the number of cells in a certain area of known size. The separating distance between the chamber and the cover is predefined, thus ...
The proportion of the cells counted applies if not all inner squares within a set square are counted (i.e., if only 4 out of the 20 in a corner square are counted, then this term will equal 0.2). When counting large squares with a volume of 100 nanoliter (nL), a multiplication by 10000 leads to the desired cell count per milliliter.
When scientists use a traditional microscope to observe a cell, they use stains -- chemicals that color parts of the cell to make them visible. However, these stains cause damage and kill the cell ...
The shape and texture in each individual grain is made visible through the microscope. [7] As the microscopic scale covers any object that cannot be seen by the naked eye, yet is visible under a microscope, the range of objects that fall under this scale can be as small as an atom, visible underneath a transmission electron microscope. [8]
Light micrograph of a moss's leaf cells at 400X magnification. The following outline is provided as an overview of and topical guide to cell biology: . Cell biology – A branch of biology that includes study of cells regarding their physiological properties, structure, and function; the organelles they contain; interactions with their environment; and their life cycle, division, and death.
Langhans giant cells (LGC) are giant cells found in granulomatous conditions. They are formed by the fusion of epithelioid cells ( macrophages ), and contain nuclei arranged in a horseshoe-shaped pattern in the cell periphery.
These stains allow for the detection of white blood cell, red blood cell, and platelet abnormalities. Hematopathologists often use other specialized stains to aid in the differential diagnosis of blood disorders. [citation needed] After staining, the monolayer is viewed under a microscope using magnification up to 1000 times.