Dzidzira Tsananguro:
Kugamuchirwa kuhofisi yemazino yebiologic muTucson yakanaka, AZ! Isu tiri mercury-yakachengeteka uye fluoride-isina mazino hofisi inosanganisa akanakisa maficha ezvese uye biological mazino. Chinangwa chedu ndechekuona mhinduro ine hutano kune murwere wega wega nekushandisa tsvakiridzo-inotsigirwa mapuroteni akagadzirirwa murwere wese.