Dr. Jerubella Abelilla is a former Stein Lab student who received her Ph. D. in May 2018. As part of her dissertation work, she studied the duodenal, ileal, and total tract digestibility of fiber in corn- and wheat-based diets. Because the fiber in corn and wheat differs in the concentration of arabinoxylans, she also investigated whether adding microbial xylanase to the diets would affect fiber digestibility. Adapted from a presentation at the 2018 ASAS Midwestern Section meeting, Omaha, NE, March 12-14.