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. 2020 Nov 24;7:617373. doi: 10.3389/fmed.2020.617373

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Copyright © 2020 Jankowska, Nagarkatti, Acharyya, Dahiya, Stewart, Macpherson, Wilson, Anderson, MacGregor, Maclean, Dey, Debrabant and Atreya.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Growth evaluation of T. cruzi amastigotes in MK2 cells inoculated with unexposed and 405 nm light exposed T. cruzi trypomastigotes. (A,C) represent the cells grown on tissue culture slides inoculated with unexposed T. cruzi trypomastigotes at 3 days and at 6 days post inoculation, respectively, demonstrating the replication of the parasite inside infected MK2 cells. (B,D) represent the cells inoculated with T. cruzi trypomastigotes exposed to 15 mW/cm² 405 nm light for 5 h (270 J/cm²), at 3 and 6 days post inoculation, respectively, demonstrating the inability of the parasites to replicate. Black arrows represent T. cruzi amastigotes within MK2 cells.