Fuchsine (rosaniline hydrochloride) is a magenta dye. Basic fuchsine is a mixture of rosaniline, pararosaniline, new fuchsine and Magenta II. Carbol fuchsin is a mixture of phenol and basic fuchsin, used in bacterial staining procedures. It is commonly used in the staining of mycobacteria as it has an affinity for the mycolic acids found in their cell membranes. The World Health Organization recommendation of 0.3% carbol fuchsin in the ZN method for staining acid-fast bacilli (AFB).

Capreomycin is an antibiotic, which is used in combination other antituberculosis drugs fro the treatment of pulmonary infections caused by capreomycin-susceptible strains of M. tuberculosis when the primary agents (isoniazid, rifampin, ethambutol, aminosalicylic acid, and streptomycin) have been ineffective or cannot be used because of toxicity or the presence of resistant tubercle bacilli. Little is known about capreomycin's exact mechanism of action, but it is thought to inhibit protein synthesis by binding to the 70S ribosomal unit. Capreomycin also binds to components in the bacterial cell which result in the production of abnormal proteins.