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.
Standard Frame Sizes. If you are making your prints to fit in a standard frame with a pre-cut mat, the following is a list of frame sizes and mat openings that you can find at most arts and craft stores. You should only use this as a guideline since mat openings can vary from manufacturer to manufacturer.