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. 2020 Nov 9;10:19303. doi: 10.1038/s41598-020-75774-3

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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The actin structures elicited with PDGF-BB treatment are bona fide CDRs. M28 mouse embryonic fibroblasts were serum-depleted in 0.2% FBS media for 12 h prior to addition of 20 ng/ml PDGF-BB for 6 m. (a) A low magnification phase contrase image shows numerous CDRs (select CDRs indicated with red arrows). (b–j) Immunofluorescence images demonstrating that F-Actin (labeled with phalloidin) (c,f,i) co-localizes with known CDR components cortactin (b), WASP2 (e) and Nck (h) as evidenced in the merge of these signals (overlap appears white) (d,g,j).