Draw a cell that secretes bicarbonate into the lumen of the pancreas, selecting transporters and/or enzymes from the following list (you may or may not need them all):
chloride channel
CFTR channel
GLUT4
H+-K+-ATPase
Na+-Cl--K+ Symport
Cl- - HCO3- Antiport
Cl- - HCO3- Symport
carbonic anhydrase
K+ leak channel
leaky junctions
Na+-K+-ATPase
Na+-H+ antiport
Label the cell showing the lumen, interstitial fluid, the basolateral membrane, and the apical membrane.