Context: In many people, the infection waxes and wanes. Tissue destruction and necrosis are often balanced by healing and fibrosis. Affected tissue is replaced by scarring and cavities filled with caseous necrotic material. During active disease, some of these cavities are joined to the air passages bronchi and this material can be coughed up. It contains living bacteria, so can spread the infection. Treatment with appropriate antibiotics kills bacteria and allows healing to take place. Upon cure, affected areas are eventually replaced by scar tissue.

Question: What process replaces tissue damaged by TB?
Answer: scarring

Question: What material can sometimes be expelled by coughing if the cavities it's stored in connect to bronchi?
Answer: caseous necrotic material

Question: What type of bacteria-attacking medicine will treat tuberculosis?
Answer: antibiotics

Question: Are the bacteria in caseous necrotic material living or dead?
Answer: living

Question: What replaces scarring?
Answer: Unanswerable

Question: What is affected tissue filled with?
Answer: Unanswerable

Question: What do cavities join with in the waning period?
Answer: Unanswerable

Question: What medicine treats scar tissue?
Answer: Unanswerable

Question: What joins with air passages to prevent material from being coughed up?
Answer: Unanswerable