Time-lapse images of human eggs after parthenogenetic activation
Watch this video of human eggs after being parthenogenetically activated in a Bedford Research experiment. Unfertilized human eggs activated in the laboratory, termed “parthenotes,” can divide into stem cells with the capacity to develop into any body tissue type.
Human eggs were parthenogenetically activated with SrCl2 (5 mM) and then incubated at 37°C and 6.5 % CO2 in a medium that allows for cell division. About 35 % of the eggs cleaved while the rest remained alive without dividing. One 8-cell, one 4-cell, three 2-cell, and one fragmented parthenotes can be observed by the end of the incubation period. Images were taken every 15 minutes for a total of 42 hours.