The wall is anatomically analogous to the human fingernail or toenail. Toenail and fingernail infections are referred to as onychomycosis. A small lesion appeared on her left index finger, near the base of the fingernail. The use of fingernail polish can be traced back even further. Sometimes the victim has scratched the perpetrator in defense and fingernail scrapings can be collected. A quick scrape with a fingernail is effective and intuitive. It is soft enough to be scratched with a fingernail and rather dense. They manufactured rough pottery, mostly without decorations, or ornamented by making fingernail indentations. Samples of hair, fingernail, and other tissues were removed, and radiological studies were conducted. It is a hard surface, similar to the human fingernail. Speculation arises from Jillette's red fingernail on his left hand. Other than a broken fingernail, she had no other marks. She had one in her makeup compact, and also one in her fingernail. A centimetre is approximately the width of the fingernail of an average adult person. Mulder and Scully find a pink fingernail at the scene.