after 6 weeks feeding on either a high-cholesterol/fat ( h ) or a low-cholesterol/fat ( l ) diet , jejunal and colonic uptake was measured using a previously validated in vitro technique in control rabbits with an intact intestinal tract ( c ) and in animals submitted to the surgical removal of the distal half of the small intestine ( r ) .
C0021853
intestinal tract
C0192601
removal of