Figure 5. Evaluation of 68Ga-HZ20 in
rhACE2-intraperitoneal spleen model. (A) PET imaging with in situinjection of different doses of rhACE2 in the spleen. The white box
indicates the spleen injection site (K, B stands for kidney and
bladder). (B) Comparison of SUVmax in the spleen in Figure 5A and Figure
S8. (C) The ratio of spleen to muscle SUVmax. (D) ex vivo PET
imaging of spleen tissue. (E) Comparison of spleen tissue % ID/g. (F)
Correlation analysis between SUVmax and rhACE2 doses at 45 min after
injection. (G) Western blot of rhACE2 at the injection site.