 Gregory Pincus, John Rock, Gerhart Domagk vakagadzira chii?Gregory Pincus, John Rock, naGerhard Domagk vakanga vari vanhu vanokosha mukugadzirwa kwezvinodzivirira pamuviri, zvinowanzozivikanwa semapiritsi ekudzivirira kubereka. Imwe neimwe yakabatsira kune zvakasiyana-siyana zvekutsvaga nekusimudzira maitiro. Gregory Pincus, nyanzvi yezvipenyu yokuAmerica, akaita tsvakurudzo pamusoro pemitoo yehomoni yekudzivirira kubata pamuviri. John Rock, chiremba wechikadzi wekuAmerica, akashanda naPincus uye akabatsira kunatsa magadzirirwo epiritsi. Gerhard Domagk, nyanzvi yekemisitiri yokuGermany, akapiwa Mubayiro weNobel nokuda kwebasa rake remishonga inorwisa mabhakitiriya, achibatsira nenzira isina kunanga kufambiro mberi yekudzivirira kubata pamuviri. Pamwe chete, mipiro yavo yakachinja hutano hwekubereka uye kuronga mhuri, zvichipa nzira yakavimbika uye iri nyore yekudzivirira kubata pamuviri. 