Fig. 6From: Efficacy of the hypoxia-activated prodrug evofosfamide (TH-302) in nasopharyngeal carcinoma in vitro and in vivoTumor morphology by H&E staining. Tumor tissues were collected immediately after sacrifice, fixed in 4% paraformaldehyde, and embedded in paraffin. Hematoxylin and eosin (H&E) staining was conducted for tumor morphology. Representative images at 40× magnification are shownBack to article page