by Maribel Alonso, Agricultural Research Service Distinct effects of butyrate on colon cancer cell lines (A) HCT116, (B) HT-29, (C) Caco-2 cell growth curves for 24, 48, and 72 h, (D) data for cell growth curve (A–C). The “N/D” stands for “not detectable”. Letters that are not shared between concentration group means are significantly different by...