in addition they are not susceptible to the effects of chemicals agents, which puts insects suitable for use in laboratories, hospitals and other rooms where dangerous chemicals compounds are used.[url=http://f.r.a.g.ra.nc.e.rnmn@www.gamenglish.com/message/index.php]http://f.r.a.g.ra.nc.e.rnmn@www.gamenglish.com/message/index.php[/url]