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.
A liver biopsy is often done in persons with unexplained elevated liver tests for more than 6 months. A needle is put quickly in and out of the liver to get a small sample, like a pencil lead about one inch long. This is done with some local anesthetic. There may be no pain, or shots of pain medicine may be required.