these observations suggest that the if-cbl receptor ( a ) translocates to the apical cell surface at the mid-villus region by transport in vesicles , ( b ) directly inserts into and then remains fixed in microvillus pits , ( c ) is elaborated on the luminal surface most extensively in villus tip cells , and ( d ) although reinternalized , does not move if and/or cbl to the basolateral cell surface .
C0026049
microvillus
C0007634
cells