Aquaporins are not seen in:
Aquaporins are integral membrane proteins, expressed in different regions of the body. For example Aquaporin 1 and 2 are seen in the kidney, aquaporin 5 in lacrimal glands, aquaporin 9 in human leukocye, liver lung and spleen. Their main function is to transpo water across cell membranes in response to osmotic gradients. Ref: Ganong's Review of Medical Physiology, 21st Edition, Page 247
Kidney
Lacrimal gland
Spleen
None of the above