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.
As with the Letter paper size A4 size paper is 6mm (0.2) narrow than US Legal paper, however unlike previously A4 has a smaller length than Legal paper by 59mm (2.3). Thus Legal paper is bigger in area than A4 by 0.015 square metres (0.18 square yards).