CD44 and Alzheimer disease: Additionally, BM-MSCs and AD-MSCs both show expression of CD177 (stem cell factor receptor) [128], CD29 (beta-1 integrin), CD44 (hyaluronate receptor), CD49e (alpha-5 integrin, important for cell adhesion to fibronectin), CD146 [109], CD9, CD10, CD13, and CD59 [129].