Whole Genome Sequences of 23 Species from the Species Group (Diptera: Drosophilidae): A Resource for Testing Evolutionary Hypotheses.

Large groups of species with well-defined phylogenies are excellent systems for testing evolutionary hypotheses. In this paper, we describe the creation of a comparative genomic resource consisting of 23 genomes from the species-rich species group, 22 of which are presented here for the first time. The group is well-positioned for clade genomics.

What parents in Australia know and do about head lice.

Introduction: Although parents in developed market economies regard head lice infections (pediculosis) as a significant problem, health departments generally rate pediculosis as a low priority health issue, encouraging parents to manage and control it. But how well equipped and willing are parents to manage the infections? There do not appear to be any studies in the literature addressing these issues. This article presents the results of a survey conducted in Australia that aimed to answer these questions.

Ubiquitin-mediated proteasome activity is required for agonist-induced endocytosis of GluRs.

Recent studies documenting a role for local protein synthesis in synaptic plasticity have lead to interest in the opposing process, protein degradation, as a potential regulator of synaptic function. The ubiquitin-conjugation system identifies, modifies, and delivers proteins to the proteasome for degradation. We found that both the proteasome and ubiquitin are present in the soma and dendrites of hippocampal neurons.

Effect of long-term therapies with penicillin and sulfadiazine on Streptococcus mutans and lactobaccilli in dental plaque.

Plaque samples were obtained from 13 children receiving long-term therapy with benzathine penicillin for the prevention of rheumatic fever recurrences, 31 children receiving oral sulfadiazine for the same purpose, and 29 untreated siblings. The therapies were found to have no effect upon the proportions of Streptococcus mutans or lactobacilli in dental plaque, upon the percentage of children harboring the organisms, nor upon the susceptibility of the organisms to penicillin and sulfadiazine. Of the S.

In vitro effects of low concentrations of penicillin and sulfadiazine on Streptococcus mutans.

Investigations were conducted to determine the in vitro effects of low levels of penicillin and sulfadiazine on the growth, plaque formation, and agglutination of Streptococcus mutans and on the synthesis and activity of enzymes synthesizing extracellular polymers. The concentrations tested were equivalent to those expected in the saliva of subjects receiving oral therapy with the agents. Penicillin at 0.