CD44 and Miyoshi myopathy: CD44 levels in benign CD49f+CD24−(PM), CD49f−CD24+(MP), and CD49f−CD24−(MM) cells also exhibited a range of CD44 expression: PM (range: 30-83%), MP (range: 2-89%) and MM (range: 9-85%), but again were significantly lower than CD44 levels in benign CD49f+CD24+(PP) cells.