Lung tissues were removed from the xenograft mice, fixed in 10% formalin, and then embedded in paraffin. Lung tissue sections of 4μm thin were cut and mounted on SuperFrost Plus glass slides; the tissues were fixed in methanol and stained in hematoxylin and eosin (HE). The slides were viewed under a Zeiss Axioplan light microscope at a magnification of × 200 [33 (link)].
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