Answers. Relevance. Rating Newest Oldest. Best Answer: a Spanish term that was formerly used in the Spanish Empire to designate people of mixed European (Spaniard) and Amerindian ancestry living in the region of Latin America.[1] The word originated from the Romance language / Latin word Mixticius, meaning mixed.
The major mechanism of lead toxicity is due to increased generation of reactive oxygen species (ROS) and interference with generation of antioxidants. Lead causes the generation of ROS like hydroperoxide, hydrogen peroxide, and singlet oxygen. ROS are stabilized by glutathione in the body.
Sources Of Lead Exposure The main source of lead poisoning is lead-based paint and lead-contaminated dust. Lead-based paints were banned for use in housing in 1978. Lead contamination in the home comes primarily from old lead-based paint that is deteriorating or rubbed off friction surfaces, such as windows and doors.