Mehlala ea libetsa tsa lefutso e kenyelletsa livaerase tsa ntaramane tse kentsoeng liphatsa tsa lefutso tsa chefo ea cobra le E. coli e nang le kokoana-hloko ea koatsi. Libetsa tsa liphatsa tsa lefutso li khetholloa ka theko e tlaase ea tlhahiso, ho bolaea ho phahameng le nako e telele ea ketso. Mokha o mong o thata ho fumana, ho thibela le ho alafa. Mokhoa oa ho sebelisa o bonolo ebile ho na le mekhoa e mengata ea ho lahla. E senya feela lintho tse phelang tse nang le litšobotsi tsa bohlokoa, 'me u se ke ua senya libetsa, lisebelisoa le lisebelisoa. 'Me hang ha e sebelisoa, e tla ba le phello e matla ea ho thibela kelello.