Worm Breeder's Gazette 10(3): 120

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Erratum for the Embryonic Cell Lineage

Curtis Loer, David Waring, Cynthia Kenyon and John Sulston

Figure 1

Figure 2

In examining embryonic lineages that give rise to the dorsal and 
lateral hypodermis, we have found a clerical error in the embryonic 
cell lineage paper (Sulston et al.  (1983), Dev.  Biol.  100, 64-119). 
We have used the lineages of Caa and Cpa as positional markers in 
following the ABarpp lineage (which gives rise to, among others, V1, 
V2, V4 and V6 right and left) from 100 min to 260 min and have found 
that the positions of the descendants of Caaa and Cpaa are reversed in 
Figures 7a (260 min), 10 (290 min), 13 (L1) and 14 (L1).  At 260 min, 
the four nuclei descended from Caaa are to be found on the left of the 
dorsal midline and those from Cpaa on the right.  At about 310 min of 
embryogenesis, most of the dorsal hypodermal nuclei migrate across the 
midline to reside on the side opposite to that of their origin (Fig.  
10).  Thus, after this stage, the four descendants of Cpaa reside on 
the left side and Caaa on the right side (Figs.  13 and 14a).  Note 
that Fig.  5 is correct with Caa to the left (and anterior) of Cpa.
[See Figures 1 & 2]

Figure 1

Figure 2