MSpappap VR15 worm_anatomy WBbt:0003857 mu_bod lineage name: MSpappap Embryonic cell of pedigree MSpappap. In Sulston et al., 1983, probably this cell is referred to as MSpappar. In the movie published by Richards, et al., 2013, it appears that the anterior daughter of MSpappa (MSpappaa) ends up on the left of MSpappap. WBbt:0006426 body wall muscle cell from MS lineage embryonic cell VMR