Ukwabelana kwansuku zonke -Ukukhwehlela kanye neLoquat Ukukhwehlela kuwuphawu oluvamile lwepheshana lokuphefumula, olubangelwa ukuvuvukala, izinto zangaphandle, ukugqugquzelwa ngokomzimba noma kwamakhemikhali kuqhoqhoqho, i-bronchial mucosa, noma i-pleura.Ibonakala nge...