Bissen, S.T. and Weisblat, D.A (1987). Early differences between alternate n blast cells in leech embryos. J. Neurobiol 18, 251-269.[Medline]
Blair, S.S (1982). Interactions between mesoderm and ectoderm in segment formation in the embryo of a glossiphoniid leech. Dev. Biol 89, 389-396.[Medline]
Blair, S.S., and Weisblat, D.A (1982). Ectodermal interactions during neurogenesis in the glossiphoniid leech Helobdella triserialis. Dev. Biol 91, 64-72.[Medline]
Braun, J. and Stent, G.S (1989). Axon outgrowth along segmental nerves in the leech: I. Identification of candidate guidance cells. Dev. Biol 132, 471-485.[Medline]
Braun, J. and Stent, G.S (1989). Axon outgrowth along segmental nerves in the leech: II. Identification of actual guidance cells. Dev. Biol 132, 486-501.[Medline]
Endo, Y. and Tsurugi, K (1988). The RNA N-glycosidase activity of ricin A-chain. The characteristics of the enzymatic activity of ricin A-chain with ribosomes and with rRNA. J. Biol. Chem 263, 8735-8739.[Abstract/Free Full Text]
Gleizer, L. and Stent, G.S (1993). Developmental origin of segmental identity in the leech mesoderm. Development 117, 177-189.[Abstract]
Holland, L.Z., Kene, M., Willians, N.A. and Holland, N.D (1997). Sequence and embryonic expression of the amphioxus engrailed gene (AmphiEn): the metameric pattern of transcription resembles that of its segment-polarity homolog in Drosophila. Development 124, 1723-1732.[Abstract]
Kramer, A.P., and Weisblat, D.A (1985). Developmental neural kinship groups in the leech. J. Neurosci 5, 388-407.[Abstract]
Kornberg, T (1981). Compartments in the abdomen of Drosophila and the role of the engrailed locus. Dev. Biol 86, 363-381.[Medline]
Kornberg, T (1981). engrailed : a gene controlling compartment andsegment formation in Drosophila. Proc. Natl. Acad. Sci. USA 78, 1095-1099.[Abstract/Free Full Text]
Lans, D., Wedeen, C.J., and Weisblat, D.A (1993). Cell lineage analysis of the expression of an engrailed homolog in leech embryos. Development 117, 857-871.[Abstract]
Lawrence, P.A., Casal, J., and Struhl, G (1999). hedgehog and engrailed : pattern formation and polarity in the Drosophila abdomen. Development 126, 2431-2439.[Abstract]
Lawrence, P.A., Casal, J., and Struhl, G (1999). The Hedgehog morphogen and gradients of cell affinity in the abdomen of Drosophila. Development 126, 2441-2449.[Abstract]
Lee, J.J., von Kessler, D.P., Parks S. and Beachy P.A (1992). Secretion and localized transcription suggest a role in positional signaling for products of the segmentation gene hedgehog. Cell 71, 33-50.[Medline]
Macagno, E.R (1980). Number and distribution of neurons in leech segmental ganglia. J. Comp. Neurol 190, 283-302.[Medline]
Nelson, B.H. and Weisblat, D.A (1992). Cytoplasmic and cortical determinants interact to specify ectoderm and mesoderm in the leech embryo. Development 115, 103-115.[Abstract]
Ramirez, F.A., Wedeen, C.J., Stuart, D.K., Lans, D. and Weisblat, D.A (1995). Identification of a neurogenic sublineage required for CNS segmentation in an annelid. Development 121, 2091-2097.[Abstract]
Seaver, E.C. and Shankland, M (1999). Autonomous development during segment formation in leech: evidence contradicting a role for engrailed as initiator of a signalling pathway in the segment primordium. Dev. Biol 210, 207-.
Shankland, M (1984). Positional control of supernumerary blast cell death in the leech embryo. Nature 307, 541-543.[Medline]
Stuart, D.K., Blair, S.S. and Weisblat, D.A (1987). Cell lineage, cell death, and the developmental origin of identified serotonin-and dopamine-containing neurons in the leech. J. Neuroscience 7, 1107-1122.[Abstract]
Torrence, S.A. and Stuart, D.K (1986). Gangliogenesis in leech embryos: migration of neural precursor cells. J. Neurosci 6, 2736-2746.[Abstract]
Torrence, S.A., Law, M.I. and Stuart, D.K (1989). Leech neurogenesis II. Mesodermal control of neuronal patterns. Dev. Biol 136, 40-60.[Medline]
Torrence, S.A (1991). Positional cues governing cell migration in leech neurogenesis. Development 111, 993-1005.[Abstract/Free Full Text]
Wedeen, C.J. and Weisblat, D.A (1991). Segmental expression of an engrailed -class gene during early development and neurogenesis in an annelid. Development 113, 805-814.[Abstract]
Weisblat, D.A., Kim, S.Y. and Stent, G.S (1984). Embryonic origins of cells in the leech Helobdella triserialis. Dev. Biol 104, 65-85.[Medline]
Weisblat, D.A., Zackson, S. L., Blair, S.S. and Young, J.D (1980). Cell lineage analysis by intracellular injection of fluorescent tracers. Science 209, 1538-1541.[Abstract/Free Full Text]
Weisblat, D.A. and Shankland, M (1985). Cell lineage and segmentation in the leech. Phil. Trans. R. Soc. Lond 313, 39-56.
Whitman, C.O (1887). A contribution to the history of the germ layers in Clepsine. J. Morphol 1, 105-182.
Zackson, S.L (1982). Cell clones and segmentation in leech development. Cell 31, 761-770.[Medline]
Zackson, S.L (1984). Cell lineage, cell-cell interaction, and segment formation in the ectoderm of a glossiphoniid leech embryo. Dev. Biol 104, 143-160.[Medline]
