Villus

https://www.google.se/search?q=folate+absorption&client=firefox-b&dcr=0&source=lnms&tbm=isch&sa=X&ved=0ahUKEwii1uG3yp_XAhUhJJoKHaL5BZQQ_AUICigB&biw=1426&bih=754#imgrc=eDneT_yDF_ZMAM: