t. bottles produced much more embryos compared to those nails in the glass bottles there are compounds in the plastic material in these p. t. bottles that leach into the culture medium or the snails we do not know which compounds we haven't identified yet but they are clearly estrogenic. new wood all they must realize when we want to put a material or substance on the market it undergoes laboratory testing which enables us to show that it is harmless is all get the results are passed on to scientific and public organizations we will decide whether or not we're allowed to commercialize it when applied you can already are constantly checking all of the products that we sell to it to people. this man who are affected by these chemical products. and over a couple who use plastic like everyone else have agreed to have blood tests. showed us one is an epidemiologist for years she has been carrying out test some fertility. in two thousand and five she started studying the effects of finds another chemical additive for plastics she selected women with a high level of science in their urine instead of the effect on their infant