Hi Mohammed, you can only derive a protein concentration from a competitive ELISA under very special circumstances. If you are not sure whether you have these conditions in your experiment you should work with IC50 values.
About Lead-Based Paint. Lead is a highly toxic metal that may cause a range of health problems, especially in young children. When lead is absorbed into the body, it can cause damage to the brain and other vital organs, like the kidneys, nerves and blood. Lead may also cause behavioral problems, learning disabilities, seizures and in extreme cases, death.
In the U.S., Minnesota has banned in-state sales of childrenâs personal care products that contain the chemical. Use of lead-based interior paints was banned in France, Belgium and Austria in 1909. Much of Europe followed suit before 1940. It took the U.S. until 1978 to make this move, even though health experts had, for decades, recognized the potentially acute â even deadly â and irreversible hazards of lead exposure.