IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-12-7-51090 Original Research Paper Role Of Bronchoscopic Assisted Procedures In Diagnosing Sputum Smear Negative Pulmonary Tuberculosis Arshad Ali Dr. Dr. Rakesh Raj Nishad Dr. July 2023 12 7 01 02