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. Author manuscript; available in PMC: 2012 Feb 1.
Published in final edited form as: Dev Biol. 2010 Sep 26;350(1):1–12. doi: 10.1016/j.ydbio.2010.09.012

Fig 8. Pairs of cells are not required for efficient internalization.

Fig 8

A wild-type C. elegans embryo (A,D), a wild-type C. briggsae embryo (B), and a wild-type C. elegans embryo in which the P4 cell division has been delayed with a laser (C). Orange represents germ line precursor cells, shades of purple represent AB lineage cells. (A) Internalization of two germ line precursor cells during C. elegans gastrulation, beginning with birth of P4 cell at time 0. (B) Internalization of two germ line precursor cells during C. briggsae gastrulation, beginning with birth of P4 cell at time 0. (C) Internalization of one germ line cell after laser delay of P4 cell division. (D) The ABplppap cell internalizes as a single cell, indicated by the shaded purple cell. Its sister cell, indicated by the dark purple outline, does not internalize at this time. Other surrounding AB cells that do not internalize at this time are outlined in lighter purple. (E) Internalization timing of Z2 and Z3 in control embryos (n=7) and P4 in laser delayed embryos (n=7). Scale bar: 5 μm.