Fig. 3

The histopathology of the heart, lungs, and brain of the rats in 28-day subacute toxicity study. The heart (a-d) showed normal myocardium. The lungs (e-h) showed mild congestion and thickened alveolar walls (arrows) in all the groups including the control group. The brain (i-l) showed normal neuronal architecture with glial cells (H&E x200)