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Scores of intensity (maximum of 5+) of reaction to various intermediate filaments (IF) in the peritubular tissue of birds
| IF type | Quail | Domestic fowl | Turkey | Duck |
|---|---|---|---|---|
| ACTIN | +++(thin sleeve) | ++++ | +++ | ++ |
| DESMIN | + to ++(thin layer) | ++(thin layer) | ++ to +++ | + to 11/2+ |
| VIMENTIN | –ve | –ve | + | –ve |
| CYTOKERATIN | –ve | –ve | –ve | –ve |
