Expression of TRAF1 in Lymphoid Blasts in Cases of Infectious Mononucleosis
| Case No. . | Percentage of Blasts With TRAF1 Expression . | Intensity of TRAF1 Signal . |
|---|---|---|
| 1 | 70% | +++ |
| 2 | 50% | +++ |
| 3 | 50% | +++ |
| 4 | 50% | ++ |
| 5 | 50% | ++ |
| 6 | 30% | ++ |
| 7 | 20% | + |
| Case No. . | Percentage of Blasts With TRAF1 Expression . | Intensity of TRAF1 Signal . |
|---|---|---|
| 1 | 70% | +++ |
| 2 | 50% | +++ |
| 3 | 50% | +++ |
| 4 | 50% | ++ |
| 5 | 50% | ++ |
| 6 | 30% | ++ |
| 7 | 20% | + |
EBV+ lymphoid blasts were identified by EBER in situ hybridization in 6 of 7 cases. The coexpression of TRAF1 was shown by double-labeling with a TRAF1 probe. The hybridization signals were analyzed as described in Materials and Methods. Low intensity is indicated with +, medium intensity with ++, and strong intensity with +++.