US Patent 9044268 Method of identifying the orientation of a tissue sample

A method of identifying the orientation of a tissue sample is provided. The method includes the use of a single-use tissue marking system for use in marking a tissue sample. A first surface of the sample is marked with a first ink defined by a first color; a second surface of the tissue is marked with a second ink defined by a second color; and a third surface of the sample is marked with a third ink defined by a third color.