Thaum cev xeeb tub, kev noj zaub mov zoo ntawm cov poj niam cev xeeb tub yog qhov tseem ceeb heev, thiab nws yuav tsum ua tau raws li qhov xav tau kev noj haus sib txawv ntawm lub cev. Ntau leej niam cev xeeb tub tau noj cov protein zoo xws li ntses thiab nqaij qaib, thiab tseem ua tib zoo noj mis lossis mis hmoov. Raws li cov kua mis tshwj xeeb tau tshawb nrhiav thiab tsim rau cov poj niam cev xeeb tub, poj niam cev xeeb tub cov mis hmoov muab ntau yam, [...]