Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: Kwayoyin cuta sune sanannen sanadin cutar kansa a cikin mutane da sauran nau'ikan. Cutar kansar kwayar cuta tana faruwa ne kawai a cikin 'yan tsirarun mutane (ko dabbobi) da suka kamu da cutar. Kwayoyin cutar kansa sun fito ne daga wasu nau'ikan ƙwayoyin cuta, gami da ƙwayoyin cuta na RNA da DNA, don haka babu wani nau'in "oncovirus" (wani tsohuwar kalma da aka yi amfani da ita don sauya retroviruses). Ci gaban ciwon daji ya dogara ne da dalilai daban-daban kamar rigakafin mai masauki da maye gurbi a cikin mai masaukin. Kwayoyin cutar da aka yarda da su don haifar da cutar kansa ta mutum sun haɗa da wasu nau'ikan kwayoyin halittar kwayar cutar ɗan adam, kwayar cutar hepatitis B, kwayar cutar hepatitis C, kwayar cutar Epstein <unk> Barr, Kaposi ta sarcoma-associated herpesvirus da kwayar cutar T-lymphotropic ta mutum. Kwayar cutar kansar ɗan adam da aka gano kwanan nan ita ce polyomavirus (Merkel cell polyomavirus) wanda ke haifar da mafi yawan lokuta na wani nau'i na cututtukan fata da ake kira Merkel cell carcinoma.  Tambaya: Waɗanne irin ciwon daji ne ke faruwa a cikin ƙaramin ɓangaren mutanen da suka kamu da cutar?
Kwayar cuta