<prompt> Ngokuvamile, ucwaningo lwenziwa ngemithamo eminingana kuhlanganise nemithamo ephezulu. Endabeni yezifundo eziningana ngemiphumela ehlukene, i-NOAEL ephansi kakhulu ivame ukuthathwa. Khona-ke, i-NOAEL noma enye iphuzu lokusuka njengezinga lomthamo wesilinganiso BMDL ihlukaniswe ngesici sokuphepha, ngokwesiko 100, ukucabangela umehluko phakathi kwezilwane zokuhlola nabantu isici se-10 kanye nokwehluka okungenzeka ekuzweleleni phakathi kwabantu enye isici se-10. Amanani aphephile angaphezulu kuka-100 angasetshenziswa uma ulwazi olungaqinisekile mayelana nenani lephuzu lokusuka i-NOAEL noma ukubonwa kwabantu. Ngokuvamile, ucwaningo lwenziwa ngemithamo eminingana ehlanganisa imithamo ephezulu. Uma kwenzeka izifundo eziningana ngemiphumela ehlukene, i-NOAEL ephansi kakhulu ivame ukuthathwa.  <response>: I-NOAEL 