Fig. 2

Characteristics of ¹³¹I-fulvestrant-ALA-PFP-FA-NPs: A structural identification of ¹³¹I-fulvestrant-ALA-PFP-NPs using transmission electron microscopy and light microscopy. B Determination of nanoparticle size using nanoparticle size analyzer. C Measurement of nanoparticle zeta potential using malvern instrument. D Determination of nanoparticle stability (changes in particle size at different time points). E Changes in nanoparticle zeta potential at different time points. F Determination of nanoparticle encapsulation efficiency (assessment of nanoparticle radioactivity). (Values are means ± s.d., n = 3)