Chute JP, Saini A, Wells M, Clark W, Wu A, St Louis D, Blair P, Harlan D, Kaushal S. Preincubation with endothelial cell monolayers increases gene transfer efficiency into human bone marrow CD34(+)CD38(-) progenitor cells. Hum Gene Ther. 2000 Dec 10; 11(18):2515-28.