The dimensions and cellular composition of human blastoids were comparable to those of human blastocysts at embryonic day 6 (E6) (Extended Data Fig. 1i, j). Through embryo grading, blastoids generated ...
Edited by Douglas C. Rees, Howard Hughes Medical Institute and Caltech, Pasadena, CA, and approved December 12, 2012 (received for review October 23, 2012) ...