Correction: A minimally invasive optical trapping system to understand cellular interactions at onset of an immune response.

[This corrects the article DOI: 10.1371/journal.pone.0188581.].

The full name of the funder is missing from the Funding section. The correct funding information is as follows: This work was supported by the Engineering and Physical Sciences Research Council [grant number EP/H024891/1]. The funder had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.