...Mattias Malaguti; Rosa Portero Migueles; Jennifer Annoh; Daina Sadurska; Guillaume Blin; Sally Lowell ABSTRACT Cell-cell interactions govern differentiation and cell competition in pluripotent cells during early development, but the investigation of such processes is hindered by a lack of efficient...

... in the normal fate specification of the P-type cells. Our data suggest that the cell interactions involved in fate specification differ substantially in the rostral and midbody segments, even though the set of differentiated descendants produced by the rostral OP pathway and the midbody O and P pathways...

..., the mechanisms of germ cell specification in mice remain unknown. We located precursors to primordial germ cells (PGCs) within early embryos, and show here that cell-cell interaction among these precursors is required for germ cell specification. We found that the expression of a calcium-dependent cell adhesion...

... development by its target gene dLMO . Apterous-dependent expression of Serrate and fringe in dorsal cells leads to the restricted activation of Notch along the dorsoventral compartment boundary. We present evidence that the ability of cells to participate in this Apterous-dependent cell-interaction is under...

... detection of Escherichia coli ????????-galactosidase gene expression in Dictyostelium discoideum . Gene 85 , 353 – 362 . 10.1016/0378-1119(89)90428-9 Domingo , C. and Keller , R. ( 1995 ). Induction of notochord cell interaction behaviour and differentiation by progressive...

... expression by veinlet/torpedo activity. * Author for correspondence (e-mail: jdc@mole.bio.cam.ac.uk ) 04 03 1997 © 1997 by Company of Biologists 1997 Notch pathway vein differentiation cell interaction Drosophila veinlet intervein The wings of Pterigota insects...

... Signaling, New England BioLabs, 32 Tozer Road, Beverly, MA 01915, USA † Present address: Department of Zoology, National Taiwan University, Taipei, Taiwan, Republic of China 04 09 1996 © 1996 by Company of Biologists 1996 Notch epithelium cell interaction morphogenesis...

... , A. , Skaer , H. and Martinez Arias , A . ( 1991 ). Secretion and movement of the wingless protein in the epidermis of the Drosophila embryo . Mech. Dev . 35 , 43 – 54 . Greenwald , I. and Rubin , G. ( 1992 ). Making a difference: the role of cell-cell interactions...

...Pascal Heitzler; Pat Simpson ABSTRACT In Drosophila each neural precursor is chosen from a group of cells through cell interactions mediated by Notch and Delta which may function as receptor and ligand (signal), respectively, in a lateral signalling path-way. The cells of a group are equipotential...

...Charles A. Ettensohn ABSTRACT Cell interactions during gastrulation play a key role in the determination of mesodermal cell fates in the sea urchin embryo. An interaction between primary and secondary mesenchyme cells (PMCs and SMCs, respectively), the two principal populations of mesodermal cells...

... 1991 by Company of Biologists 1991 Drosophila cell transplantation cell interaction cell commitment Following transplantation of single DEA cells into the VNR, between one fifth and one third of them adopted neural fate. After transplanting groups of DEA cells, however, a much...

... of different blastomeres on the kinds of differentiation obtained. * Supported by NIH grant HD-15043. † Supported by NIH grant TW-04241. © 1990 by Company of Biologists 1990 cell interaction tissue mass differentiation seaurchin mesomere blastomere When the sea urchin...

... that the mechanism involved in the process of determination of the secondary-lineage muscle cells differs from that of the primary-lineage muscle cells. Interaction with cells of other lineages may be required for the determination of secondary precursors to muscle cells. The presumptive b-line and A-line muscle...

... elegans extragenic suppressor glp-1 cell interaction temperature-sensitive mutant Communication between cells is crucial in the development of multicellular organisms. Inductive interactions, in which cells of one tissue regulate cell fate in a second tissue, are particularly important...

... an understanding of this process, we need to establish some fundamental points. In particular, the following issues are discussed here. (1) Is cell interaction required for determination to proceed? (2) What is the cellular nature of determination? We have used the labelling and transplantation technique described...

... cell interaction Sertoli cells mouse follicular monolayers One of the major goals of developmental biology is to determine the molecular basis of intercellular recognition and to describe how these interactions contribute to the formation of the tissues. In the early stages of development...