In This Issue In This Issue Conjunctions of junctions ike tight junctions in vertebrates, the ladder-like septate junctions found in most invertebrates act as barriers to epithelial permeability. A pair of papers L The ␣ subunit of a pump (the Na ϩ /K ϩ ATPase) is found at the barrier-forming septate junctions in flies. esides allowing ions to flow between adjacent cells, gap junctions selectiv...

OBJECTIVE While contraindications to Essure® placement have been provided by the manufacturer, there is no consensus on how best to remove these contraceptive devices. Here, we describe a non-hysterectomy removal of Essure® for a patient with a septate uterus (ESHRE Class IIb uterine malformation). CLINICAL CASE A 35yr old G4 P2 presented for removal of Essure® implants after three years of g...

In the cat cerebellar cortex, as in most higher vertebrates, the descending branches of the basket cell axon envelop the Purkinje cell body in the region of its axon hillock in a basket-like arborization (Rambn y Cajal, 1909) . This report further characterizes the basket formations of the cat and describes septate junctions between the descending branches of the basket cell axons and between s...

BACKGROUND: The prevalence of congenital uterine anomalies in women with reproductive failure remains unclear, largely due to methodological bias. The aim of this review is to assess the diagnostic accuracy of different methodologies and estimate the prevalence of congenital uterine anomalies in women with infertility and recurrent miscarriage (RM). METHODS: Studies from 1950-2007 were identifi...

The L 1 subgroup of the immunoglobulin G superfamily participates in neurite outgrowth, neurite fasciculation and inter-neuronal adhesion. Almost all functional studies of the L 1 family have focused on their role in neurons. In this issue of the Journal of Cell Biology (Tait et al., 2000), the 155kD isoform of neurofascin, an ankyrin binding member of the L 1 family is identified as the first ...

The polarized domains of myelinated axons are specifically organized to maximize the efficiency of saltatory conduction. The paranodal region is directly adjacent to the node of Ranvier and contains specialized septate-like junctions that provide adhesion between axons and glial cells and that constitute a lateral diffusion barrier for nodal components. To complement and extend earlier studies ...

Species in the Botryosphaeriaceae are common plant pathogens and saprobes found on a variety of mainly woody hosts. Teleomorphs typically have hyaline, aseptate ascospores. However, some have been reported with brown ascospores and their taxonomic status is uncertain. A multi-gene approach (SSU, ITS, LSU, EF1-alpha and beta-tubulin) was used to resolve the correct phylogenetic position of the d...

Two new genera are established in the Dothideomycetes based on morphological and molecular data (SSU and LSU nuclear ribosomal sequences) to accommodate four ascomycete species collected from woody debris submerged in freshwater habitats. The genus Minutisphaera is represented by a single species, M. fimbriatispora, which was collected from freshwater habitats in temperate forests in North Amer...

15 Living on emerged land raises several problems: water may be rare or absent, implying (1) that mineral nutrition is more or less impaired, (2) radiation (mainly toxic UV-rays) is not filtered out and (3) strong fluctuations of temperature are not prevented. In spite of those adversities, Precambrian land was colonized by phototrophic microorganisms, probably prokaryotes1, and multicellular t...