**Trophectoderm-Specific Knockdown of LIN28 Decreases Expression of Genes Necessary for Cell Proliferation and Reduces Elongation of Sheep Conceptus**

#### **Asghar Ali <sup>1</sup> , Mark D. Stenglein <sup>2</sup> , Thomas E. Spencer <sup>3</sup> , Gerrit J. Bouma <sup>1</sup> , Russell V. Anthony <sup>1</sup> and Quinton A. Winger 1,\***

