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 other uses, see Mat (disambiguation). Mats are used for safety in gymnastics, and in training new skills. They are usually a piece of foam (covered in leather) ranging from 1.5-28 inches thick, covered in a vinyl or plastic lining. The foam ranges in density from relatively firm to very soft.