Fig. 3.
Representative Congo-red (A&C) and crossed polarized light (B&D) images of spherulites formed in (A&B) aged Aβ42 + Cu(II) and (C&D) KH + Cu(II). A shows Congo red-positive structures which are revealed in B under polarized light as spherulites. C shows Congo red-negative structures which reveal a spherulite-like morphology in D under polarized light. Scale bar = 100 µm.