herpo stateme, , prosecutor emily pelphrey attacked the idethatay kill himself. >> he was plannior his future heoved his grandchen.n >> rorter:he dtor who teated ray in the hospital where he dd stified@teresa heelf said ray was not suicidal. >> she hadndicated that he had not mentioned anything about insuicidal a athatimem . >> rter: nol t ste argredndd isasurder. mlaexaminer dr. ey testified that antifreeze killed ray. >> he died as result of complicatitis@of ethylene glycol toxicity. >> reporter: butxaly how antifrze kills sas critical he sta's case. p>vn mebody ingests @ antietze, eithereliberately to tm, whqt's the prress( o s soms?0 >> welll initiallyhe apear tberunkr storou then they'll become progressively leargic,nd then bome comatose. anthen thehell start to hava congestive hrt fai a pulmonary ema. and theh theyell start to go into renal failurend then eventual die. >> y c sort of estimate they ingested the anfreeze baseon whe their symptoms are at that point? >> that's extly rit. it posble to getou estima of en thengngon ocrr. >> reporter:heeyst the state's was t progresonof