At the ASCB / IFCB meeting in Philadelphia, Feric and Brangwynne will take the gravity story one step further on December 8, describing how giant Xenopus
egg cells manage to support thousands of membrane-less compartments inside the nucleus.
To investigate how
the egg cell manages to rid itself of such a resilient structure, Joana Pinto, a PhD student in the Lénárt lab, developed fluorescent tags for mother and daughter centrioles in a starfish egg cell and recorded the entire process of eliminating them.
Not exact matches
Beginning with mouse
egg cells, Daley and his team tricked these
egg cells, or oocytes, into thinking they had been fertilized (a process called parthenogenesis) and
managed to isolate embryonic stem
cells from the subsequent early mouse embryos.
Scientists
managed to transfer the extinct frog's nuclei into the
egg cells of a barred frog (right), but so far, the embryos have yet to fully develop.
They obtained 29
eggs and
managed to fertilize one, but the embryo did not progress beyond the four -
cell stage.
Using an enzyme that targets some 200 sites on the X chromosomes in mosquito
eggs, the team has
managed to shred X chromosomes so thoroughly «that it's too much for the
cell to repair,» Burt said.