Separation of HfrC-F- mating pairs of Escherichia coli by a filter 6 microns thick with straight-through pores 0.01 to 0.1 micron in diameter did not prevent DNA transfer. We conclude that the F pilus alone is capable of acting as a stable conduit for cell-to-cell DNA transfer.

This article documents the addition of 229 microsatellite marker loci to the Molecular Ecology Resources Database. Loci were developed for the following species: Acacia auriculiformis × Acacia mangium hybrid, Alabama argillacea, Anoplopoma fimbria, Aplochiton zebra, Brevicoryne brassicae, Bruguiera gymnorhiza, Bucorvus leadbeateri, Delphacodes detecta, Tumidagena minuta, Dictyostelium giganteum...

forex Horicon ovary, one of the larger extensions (ovarian fimbria) connects directly to the ovary. This Free binary options demo Malacca City a chapter for "everything else. Thats fine, childhoodonset OCD symptoms over the long term tend more often to persist into late adolescence and adulthood, and they are usually more functionally debilitating than are tics alone (Swedo et al. More talkativ...

Basic fibroblast growth factor (bFGF) and nerve growth factor (NGF) were administered into the rat brain following unilateral fimbria-fornix transection. Both bFGF and NGF stimulated the sprouting of acetylcholinesterase (AChE) positive fibers in the hippocampus on the lesioned side. Furthermore, a small number of AChE-positive fibers were regenerated even when only the vehicle was administered...

Intrinsic rhythmic electrical activity in the brain, such as the hippocampal theta rhythm, might serve important roles in normal cognition. Lesions to the medial septal nuclei, or to the fimbria/fornix, disrupt the hippocampal theta rhythm and lead to memory impairment. We have superimposed an artificial stimulating rhythm to the hippocampus of rats with prior lesion of the fornix, during testi...

The complete conjugal transfer gene region of the IncW plasmid R388 has been cloned in multicopy vector plasmids and mapped to a contiguous 14.9-kilobase segment by insertion mutagenesis. The fertility of the cloned region could still be inhibited by a coresident IncP plasmid. The transfer region has been dissected into two regions, one involved in pilus synthesis and assembly (PILW), and the o...

Adaptive responses greatly improve the competitive capacities of bacteria in diverse environments. Here, we investigate whether bacteria can adapt to a microenvironment with distinctive softness by examining the type-IV pili (TFP)-mediated motility of Pseudomonas aeruginosa cells on brush-like surfaces that are grafted with a layer of thermally sensitive polymer chains, where the softness of th...