Figure 2From: A study of the association between urinary aluminum concentration and pre-clinical findings among aluminum-handling and non-handling workers Distributions of pre-clinical markers in aluminum-handling and non-handling workers. There were no significant differences in KL-6, SP-D, TRCP-5b, IL-6, IL-8, β2-microglobulin and 8-OHdG between these two groups. A significant difference was found in δ-ALA levels.Back to article page