PMID-sentid Pub_year Sent_text comp_official_name comp_offsetprotein_name organism prot_offset 26690706-5 2016 Based on four-color confocal microscopy real-time movies and high resolution digital imaging, we find that after CD20 mAb binding and C1q uptake, C3b deposits on cells, followed by Ca(2+) influx, revealed by bright green signals generated on cells labeled with FLUO-4, a Ca(2+) indicator. Fluo 4 261-267 keratin 20 Homo sapiens 113-117