Scientific Reports 2, Article number: 769 (2012); Published: 25 October 2012; Updated: 25 March 2013

The authors have noticed an error in Equation 4 and in Table 1 of the original Article. In Equation 4, “dt” should be replaced by “1” and, in all cases, “ = ” should be replaced by “~”. The correct equations appear below.

Table 1 Conjugation lifetimes involving some subtype I T cells in the absence of stable pairs