Chronic myeloid leukemia (CML) is a rare type of blood cancer and occurs when the bone marrow makes too many of one type of white blood cell, called myeloid cells. Almost all CML cases are caused by an abnormal chromosome called the Philadelphia chromosome.
These are new 18X24 Quality Picture Mats. The Openings are Bevel cut 12.5 x 18.5 to fit a 13X19 photo or print. These mats are cut from Quality white core mat board and are excellent for framing photos or prints.
This size mat board will overlap the image by Â¼ inch on all four sides, allowing it to hold the image down. Mat boards cut by custom frame shops will usually cut the mat with an opening of 7.75Ã9.75 so there is less masking of the image. The mat external size is the perimeter, or outside dimension, of the mat board. The mat external size should match the dimensions of the glazing.