Bovine leukemia virus‐specific antibodies in french cattle. III. Prevalence of the BLV‐gp 51 radioimmunoassay for the detection of BLV‐infected animals

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Abstract
The control of the spread of BLV infection among cattle requires very sensitive methods of detection. The BLV‐gp5I radioimmunossay presents great advantages over the other serological methods, including the BLV‐p24 radioimmunoassay. This is clear from studies of normal animals from the high‐leukemia‐incidence region which show that anti‐gp5I antibodies reach higher titers than anti‐p24 or may even exist alone. Moreover, a sequential survey reveals that the anti‐gp antibodies appear earlier. On the other hand, it was not possible to detect a viral antigen expression in the tissues of the infected animals.