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.
It is often useful to add extra matting to the border size so the measurements become round numbers which are easier to work with. For example: An 8â³ x 10â³ photograph has an actual opening of 7-3/4â³ x 9-3/4â³. With a 2â³ mat border on all four sides, the outside mat edge will be 11-3/4â³ x 13-3/4â³. By adding 1/8â³ to each border (now 2-1/8â³), the result is a 12â³ x 14â³ mat, which will also be the size of the frame and glass.