4 May 2016 This week, two groups report that they have sustained human embryos in vitro for 12–13 days. Studies on human embryos sustained in culture could help to clarify Revisiting the 14-day rule might tempt people to try to rationalize or . Warmflash, A., Sorre, B., Etoc, F., Siggia, E. D. & Brivanlou, A. H.
Received 4 October 2003; received in revised form 3 November 2003; accepted 18 November 2003. Abstract sions of Smith's ratio rule yield smaller competitive ratios than the previously best-known has a release date or processing time at least as large ..  C. Chekuri, R. Motwani, B. Natarajan, C. Stein, Approxi-.