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.
For instance, an 8x10 from a photo lab will usually be 8x10, but you can print an 8x10 at home on 8.5x11 paper. Mat exact opening: This is the dimension of the hole cut in the mat. A typical store-bought ready-made frame for an 8x10 photo will have a mat opening of 7.5x9.5. This will allow the mat to overlap the image by Â¼ inch on all 4 sides. It also helps to hold the image down. Mats cut by custom frame shops will usually have an opening of 7.75x9.75 so there is less masking of the image.