What is the name of the procedure used to collect DNA from the cells inside a person's cheek?

The procedure used to collect DNA from the cells inside a person's cheek is known as a buccal swab. This technique involves using a sterile swab to gently scrape the inner lining of the cheek, where epithelial cells are abundant. These cells contain the DNA that can be extracted for various purposes, such as genetic testing or forensic analysis.

This method is preferred because it is non-invasive and relatively simple to perform, allowing for convenient sample collection that can be done in various settings, including clinics or even at home. The ease of the procedure contributes to its popularity for DNA collection, especially in research and legal contexts.