^ahyp 6 fuses with hyp 7 during mid-L3 stage (Yochem et al., 1998).
^bIn adult hermaphrodite, hyp 7 syncytium contains 139 nuclei. Twenty-three of these are fused embryonically (including hyp 13) and 116 are added postembryonically. Of the nuclei post-embryonically added to hyp 7,  98 derive from seam blast cell divisions (H, V and T lineages), 12 derive from P lineages (including hyp 12) and 6 derive from hyp 6. In the adult male, hyp 7 contains 144 nuclei (Shemer and Podbilewicz, 2000).
^chyp 8 - 11 are arranged similarly between the sexes until mid-L4 stage. In males, after mid-L4, hyp 8 fuses with hyp 11, followed by fusion with hyp 9 and finally with hyp 10 generating a syncytium with five nuclei (Nguyen et al., 1999).
^dVentral hypodermal cell or preanal hypodermis (P12pa) (Sulston and Horvitz 1977) eventually fuses with hyp 7 (Hedgecock and White, 1985).
^eSisters of the T cells (ABpl/rappppa) are located posterior to the anus (see cells 22 and 23 in HypFIG 2) and are present in males until very late L4 when they fuse with hyp 7 (Nguyen et al, 1999). In hermaphrodites, they fuse to generate the hyp 7 syncytium along with 21 other cells during elongation stage.
^fLeft and right cell groups. During embryonic and larval life they are unfused and act as stem cells.  Late in L4 stage H0-H15, post-embryonically derived seam cells on each side undergo homotypic fusion to form the seam syncytia of adults.

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