The ascending portion of the loop of Henle is
A. permeable to water and impermeable to sodium.
B. permeable to water and permeable to sodium.
C. impermeable to water and permeable to sodium.
D. impermeable to water and impermeable to sodium.
E. the site of active transport of water.
C. impermeable to water and permeable to sodium.
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Gene therapy for human genetic diseases has not been successful yet.
Answer the following statement true (T) or false (F)