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.
Liver biopsy . Your doctor may want to remove a sample of your liver tissue and check it under a microscope for cancer cells. This can be done several ways. In one method, your doctor removes some liver tissue with a needle that he places through your skin and into your liver.