the experiment, animals
were sacrificed under ether anesthesia at specific time intervals
and following treatment, and important organs such as the lungs, liver,
spleen, and kidneys of rats from each group were rapidly removed.
The specimens were postfixed in buffered formalin (10% v/v) for 24
h. Tissues were sectioned (3–4 mm thick) after fixation, dried
with 100% alcohol, embedded in new paraffin, and allowed to cool.
Cross sections of each tissue were cut on a microtome and stained
with hematoxylin and eosin (H&E). Using an Olympus BX50 Microscope
System (Olympus, Japan), microphotographs were taken and the slides
were examined for histopathological anomalies.42 (link)