Screening, or buffing, the floor will only remove light marks caused by normal wear and tear. Once the floor is screened (lightly sanded) it will be coated with a coat of polyurethane. It usually takes one day to screen and recoat a hardwood floor. Screening will not remove deeper scratches and indentations.
Definition. A liver biopsy is a medical procedure performed to obtain a small piece of liver tissue for diagnostic testing. Liver biopsies are sometimes called percutaneous liver biopsies, because the tissue sample is obtained by going through the patient's skin.
1 Liver biopsy â a tiny sample of liver tissue is taken to evaluate the structure and cells of the liver; used to help diagnose a wide range of liver diseases. 2  Hepatitis tests [see Hepatitis A, Hepatitis B, Hepatitis C] â to detect viral hepatitis.  Alfa-fetoprotein (AFP) â may be elevated with liver cancer.