Figure 3. CeE/DA antibody-positive pharyngeal nuclei. (A) Exploded view of the pharynx showing the location of muscle cell groups (
pm1-8) (from Albertson and Thompson, 1975). (B) Abbreviated cell lineage diagram showing the origin of posterior pharyngeal nuclei relative to the founder blastomeres (AB, MS, E, C, D and P4). CeE/DA-positive nuclei are indicated by bold type; smaller, normal type indicates similar nuclei that are undetectable with the antibody. For
pm5, CeE/DA-positive nuclei are AB descendants and negative nuclei are MS descendants. For
g1 and
g2 nuclei, no clear lineage distinction exists for CeE/DA-positive versus -negative nuclei.