I work with acetylacetone in my lab. The MSDS, in the Health Hazard section, lists the target organ as the thymus. I don't think I've ever seen the thymus listed in any MSDS as a target organ. Usually, it's the liver, or the central nervous system. I looked into what the thymus does, and some sources stated that it basically disappears after adolescence. Is this true? I'm 44; do I have any thymus left? I still wear all the PPE I need to, by the way.