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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.
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.
By layer, epithelium is classed as either simple epithelium, only one cell thick (unilayered), or stratified epithelium having two or more cells in thickness, or multi-layered – as stratified squamous epithelium, stratified cuboidal epithelium, and stratified columnar epithelium, [8]: 94, 97 and both types of layering can be made up of any of ...
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.
Neoplastic clear cells can originate from a variety of sources, including, but not limited to, epithelial cells, adipose cells, and chondrocytes. Some of these malignant clear cell tumors are listed below. Clear cell squamous cell carcinoma of the skin. Clear cell carcinoma of the ovary, endometrium, and cervix.
The cheek is the most common location from which a DNA sample can be taken. (Some saliva is collected from inside the mouth, e.g. using a cotton-tipped rod called a swab or " Q-Tip ". The procedure of collecting a sample in that way is typically called a "cheek swab".)
S. cerevisiae cells imaged by DIC microscopy A quantitative phase-contrast microscopy image of cells in culture. The height and color of an image point correspond to the optical thickness, which only depends on the object's thickness and the relative refractive index. The volume of an object can thus be determined when the difference in ...
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).