A cellophane membrane has proved a simple device for separating the L variant of Streptobacillus moniliformis from the bacterial form, as reported by P6rezMiravete and Calder6n (1956). When a culture was inoculated on cellophane resting on clear medium, they observed the development of the L type colonies only on the agar, whereas bacterial growth flourished on the surface of the cellophane. It...

A cellophane membrane has proved a simple device for separating the L variant of Streptobacillus moniliformis from the bacterial form, as reported by P6rezMiravete and Calder6n (1956). When a culture was inoculated on cellophane resting on clear medium, they observed the development of the L type colonies only on the agar, whereas bacterial growth flourished on the surface of the cellophane. It...

This communication describes the use of uncoated cellophane (regenerated cellulose films) for the fabrication of microplates, and the use of coated cellophane for the fabrication of open-channel microfluidic devices. The microplates based on uncoated cellophane are particularly interesting for applications that require high transparency in the ultraviolet (UV) regime, and offer a low-cost alter...

A self-contained mechanical system for circulating nutrient fluid through 12 tissue culture chambers is described in detail. This system utilizes nonperforated cellophane membranes in the chambers which separate the circulating nutrient from the tissue culture environments. The nutrient, therefore, is dialyzed through the cellophane of each chamber; some cell products are retained in the microe...

The authors discuss the birefringence property of transparent, colourless stretched cellophane and describe the colours produced when one or more layers of such cellophane is sandwiched between a pair of polarisers. The parameters that can be altered in order to vary the colours are explained, and a convenient method is suggested for viewing the range of colours produced.

The distorted anatomy, invasive tendencies, large size, and friable thin walls of both syphilitic and arteriosclerotic aontic aneurysms contraindicate any attempt at extensive surgical mani pulation in the form of resections and anastomoses of these aneurysms. The pounding, pulsating pressure exerted by these aontic dilatations presents an almost malignant tendency to in vade and penetrateany a...