Final answer:
Swabs can be taken from skin, oral mucosa, and other external body surfaces in a sterile manner. Swabs are used for bacteriological cultures, DNA matches for bone marrow registries, and detection of pathogens in various samples.
Step-by-step explanation:
Swabs can be taken from various sites depending on the purpose of the test or culture. For bacteriological culture methods, swabs are typically taken from the skin, oral mucosa, and other external body surfaces, always using a sterile swab and aseptic technique. An example of swabbing in a lab setting includes taking a sample from your skin and creating a smear on a glass slide that will later be heat-fixed with a Bunsen burner. In medical contexts, other common sites for taking swabs include the nose or throat for respiratory pathogens, the cheeks for a DNA match in bone marrow registries, or the collection of stool samples or stomach biopsies for detecting bacteria. Important steps in collecting these samples involve labeling culture plates, using sterile instruments, and ensuring proper handling and disposal of biohazard material.