The four volumes of Neil Ker's Medieval Manuscripts in British Libraries were published by Oxford University Press between 1969 and 1992. They comprise a catalogue of about 3,000 manuscripts in Latin and Western European vernaculars in hitherto uncatalogued or inadequately catalogued institutional collections in the United Kingdom and form a major research tool for humanist scholars. The index volume, produced under the direction of A. G. Watson, a former pupil of Ker's and now his literary executor, and I. C. Cunningham, (...) formerly Keeper of Manuscripts in the National Library of Scotland, provides a variety of indexes, including authors/titles; owners; geographical origins and dates of manuscripts; vernacular manuscripts; Latin and vernacular incipits; manuscripts cited; repertories cited; and iconography. There are also lists of recent accessions to libraries and of manuscripts that have migrated from one institution to another. (shrink)

In the 4 1/2 to 5 days between fertilization and implantation, the mouse conceptus must gain the abilities to implant and produce an embryo. Each of these is the sole developmental responsibility of one of two cell types forming the blastocyst, trophectoderm and inner cell mass (ICM), respectively. Trophectoderm is a polarized transporting epithelium while the ICM is an aggregate of non‐epithelial pluripotent stem cells. These two cell types originate from the division of polar blastomeres when their cleavage furrows parallel (...) their apical surfaces. Blastomeres polarize in response to asymmetric cell–cell contact, and understanding the mechanism of this induction is regarded as the key to understanding the origin of trophectoderm and ICM. Here we propose a model based on transcellular ion current loops for the induction of cell polarity during the development of the first epithelium, trophectoderm. (shrink)