To assess FB diversity within and along the human intestine, human ileal and large intestinal GALT (PP, M-ILF, and SM-ILF), LP, and SM were isolated from surgical resections of patients with colorectal cancer (CRC) >10 cm from the tumor site as previously described (Fenton et al., 2020; Jørgensen et al., 2021) (Fig. 1 A). The gene discussed is FOXK2; the disease is colorectal cancer.