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This file, which was originally posted to Cheek Epithelial Cells: How to Prepare a Wet Mount Microscope Slide, was reviewed on 6 April 2014 by reviewer Natuur12, who confirmed that it was available there under the stated license on that date.
Other surfaces that separate body cavities from the outside environment are lined by simple squamous, columnar, or pseudostratified epithelial cells. Other epithelial cells line the insides of the lungs, the gastrointestinal tract, the reproductive and urinary tracts, and make up the exocrine and endocrine glands.
In some cases, cells may be grown directly on a slide. For samples of loose cells (as with a blood smear or a pap smear) the sample can be directly applied to a slide. For larger pieces of tissue, thin sections (slices) are made using a microtome; these slices can then be mounted and inspected.
The clear epidermal cells exist in a single layer and do not contain chloroplasts, because the onion fruiting body (bulb) is used for storing energy, not photosynthesis. [3] Each plant cell has a cell wall, cell membrane, cytoplasm, nucleus, and a large vacuole. The nucleus is present at the periphery of the cytoplasm.
Pap staining is used to differentiate cells in smear preparations (in which samples are spread or smeared onto a glass microscope slide) [6] from various bodily secretions and needle biopsies; the specimens may include gynecological smears (), sputum, brushings, washings, urine, cerebrospinal fluid, [4] abdominal fluid, pleural fluid, synovial fluid, seminal fluid, [7] fine needle aspirations ...
Nucleus of a female amniotic fluid cell. Top: Both X-chromosome territories are detected by FISH. Shown is a single optical section made with a confocal microscope. Bottom: Same nucleus stained with DAPI and recorded with a CCD camera. The Barr body is indicated by the arrow, it identifies the inactive X (Xi).
A buccal swab, also known as buccal smear, is a way to collect DNA from the cells on the inside of a person's cheek.Buccal swabs are a relatively non-invasive way to collect DNA samples for testing.
In smaller cells, the diffusion of molecules is more rapid, but diffusion slows as the size of the cell increases, so larger cells may need cytoplasmic streaming for efficient function. [1] The green alga genus Chara possesses some very large cells, up to 10 cm in length, [2] and cytoplasmic streaming has been studied in these large cells. [3]