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Junction sequences generated by one-ended transposition
In the presence of the cognate transposase. plasmids containing a single inverted repeat (IR) sequence of Tn21 or of Tn1721 can fuse efficiently with other plasmids (‘one-ended transposition’) (1, 2). The junctions across ...
Dispersal of Septoria nodorum pycnidiospores by simulated raindrops in still air
Simulated raindrops, diameter c. 3 or 4 mm, fell 13 m down a raintower onto suspensions of Septoria nodorum pycnidiospores, depth 0.5 mm, or infected straw pieces. Splash droplets were collected on pieces of fixed photographic ...
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Electron-beam guiding and phase-mix damping by a laser-ionized channel
An ultraviolet-laser-ionized channel in low-pressure benzene has been successfully used to guide and focus a 7-kA relativistic electron beam over distances up to 4 m. In addition, phase-mix damping of coherent, transverse ...
The perception of problem drinkers by general hospital staff, general practitioners and alcoholic patients
A sample of 275 subjects (general hospital staff, general practitioners and alcoholic patients) was investigated regarding their perception of problem-drinkers. A set of semantic differential scales was used, and subjects ...
Acetylcholine activates a non-specific inward current in single mammalian smooth muscle cells
Acetylcholine, the major excitatory neurotransmitter to the smooth muscle of mammalian intestine, is known to depolarize smooth muscle cells with an apparent increase in membrane conductance. However, the ionic mechanisms ...
Patch and whole cell voltage-clamp of single mammalian visceral and vascular smooth muscle cells
Dispersal of the constituent cells of mammalian visceral and vascular smooth muscles has permitted recordings both of membrane currents under whole-cell voltage clamp, and of currents through single ionic channels using ...