Mice organ HE staining
Normal KM mice are injected with a 37MBq 68Ga-HZ20 probe 1 week in advance, the main organs were taken for paraffin embedding after sacrifice, after dewaxing and rehydration, 5 μm longitudinal sections are stained with hematoxylin solution for 5 min, then differentiated (2% hydrochloric acid alcohol) for several seconds, then transferred to water, washed for 30 min and then stained with eosin solution for 1 min, then dehydrated with fractionated alcohol and cleared in xylene, sealed in neutral colloidal medium, and image scanning (Aperio Versa 200, Leica).