Shazia Parveen Channar et al. 2026. AMELIORATIVE EFFECTS OF MELATONIN ON HISTOPATHOLOGICAL CHANGES IN LUNG TISSUE OF NICOTINE-EXPOSED RATS. Pakistan Journal of Physiology. 22, 1 (Mar. 2026), 28–32. DOI:https://doi.org/10.69656/pjp.v22i1.1883.