MEDICAL SCIENCES, ENGINEERING Correction for “Impaired lymphatic contraction associated with immunosuppression,” by Shan Liao, Gang Cheng, David A. Conner, Yuhui Huang, Raju S. Kucherlapati, Lance L. Munn, Nancy H. Ruddle, Rakesh K. Jain, Dai Fukumura, and Timothy P. Padera, which appeared in issue 46, November 15, 2011, of Proc Natl Acad Sci USA (108:18784–18789; first published November 7, 2011; 10.1073/pnas.1116152108).
The authors wish to note the following: “We have identified that the actual imaging frame rate used in measuring lymphatic contraction was slower than the value used to calculate contraction frequencies reported in this paper due to the software operating the camera. Using a stopwatch, we determined that actual frame rate was 4.7 ± 0.3 frames/second instead of 12.5 frames/second, which was the value used to calculate frequencies in Liao et al. Thus all frequencies (Figs. 1C, S2A, S3C, S4A, S4B, S5, S6B, and S11A; Table S1) and lymph outputs (Figs. 1C, 2B, 2D, 3C, 3D, 4B, and S11A; Table S1) published in this paper need to be multiplied by a correction factor of 0.38 ± 0.02. All time scales (Figs. 1B, 2A, 3B, S8, and S10) need to be multiplied by 2.6 ± 0.1. This error does not alter the overall basic results or conclusions of the published article. We regret the error.”