the classic means of identifying Bence Jones protein, which precipitates when urine (from patients with this type of proteinuria) is gradually warmed to 45-70°C and redissolves when the urine is heated to near boiling; as the specimen cools, the Bence Jones protein precipitates in the indicated range of temperature and redissolves as the temperature of the specimen becomes less than 30-35°C. [Henry Bence Jones]
