HIF1A and cervical carcinoma: For instance, Sobanifar et al. demonstrated using frozen cervical carcinoma xenograft sections that were harvested after 90 min post pimonidazole injection vs. 48 h post pimonidazole treatment and found that, at the 90 min time point, there was 80% co-localization of HIF1α and pimonidazole vs. a 32% co-localization at the 48 h time point [58].