Table 2.
Distribution Of AQP 5, 7, 9, and 11 in the adult rat epididymis
| Initial segment | Caput | Corpus | Cauda | |
|---|---|---|---|---|
| AQP 5 | ||||
| Principal | − | − | +/− (AS) | ++/− (PC) |
| Clear | NP | − | − | − |
| Basal | − | − | − | − |
| Halo | − | − | − | − |
| AQP 7 | ||||
| Principal | +/− (Mv) | ++ (L); +/−− (B) | ++/− (B); +/−− (A) | ++ (B); +/−− (AS) |
| Clear | NP | − | +/−− (BL) | +/− (BL) |
| Basal | − | − | +/−− | +/− |
| Halo | − | +/− | +/− | +/− |
| AQP 9 | ||||
| Principal | ++ (Mv) | ++ → + (Mv) | + → ++ (Mv) | ++ (Mv) |
| Clear | NP | − | +/−− (C) | +/− (C) |
| Basal | − | − | R | R |
| Halo | − | − | − | − |
| AQP 11 | ||||
| Principal | +/− (Mv) | +/− (Mv) | +/− (Mv) | + (Mv) |
| Clear | NP | − | − | − |
| Basal | − | R | R | R |
| Halo | R | R | R | R |
AQP, aquaporin; NP, cell type is not present; A, reaction is on apical plasma membrane; BL, reaction is on basal/lateral plasma membrane; B, reaction is on basal plasma membrane; Mv, reaction is on microvilli; L, reaction is on lateral plasma membrane; PC, punctate cytoplasmic; AS, apical/supranuclear cytoplasmic; C, cytoplasmic; R, a rare cell is reactive. −, unreactive; +/−, some cells are reactive, others are not; ++, all cells show intense reaction; +, all cells show moderate reaction; ++/−, more cells are reactive than unreactive; +/−−, more cells are unreactive than reactive; ++ → +, reaction decreases from proximal to distal caput; + → ++, reaction increases from proximal to distal corpus.