<prompt> tafsiri zifuatazo kutoka kwa swahili hadi kiingereza.watafiti wameunda mtihani mpya wa damu ambao unaweza kuwaambia madaktari ikiwa matibabu ya saratani ya mgonjwa wao yanafanya kazi, ndani ya siku moja baada ya kuanza kwa matibabu.  <response>: researchers have created a new blood test that can tell doctors whether their patients cancer treatment is working, within one day after the start of the treatment. 