Vertical Flow Immunoassay Based on Carbon Black Nanoparticles for the Detection of IgG against SARS-CoV-2 Spike Protein in Human Serum: Proof-of-Concept. - Kropaneva, Maria; Khramtsov, Pavel; Bochkova, Maria; Lazarev, Sergey; Kiselkov, Dmitriy; Rayev, Mikhail (Biosensors (2079-6374), 2023)