The results of imbedding cellophane subcutaneously in rats were compared with previous results with polystyrene; 280 films were imbedded subcutaneously in 140 rats, which were divided into three groups and observed for tumor incidence. All animals were permitted to live out their life span. Group I: Films were removed at monthly intervals from the enveloping pockets induced. Group II : Pockets ...

Cellophane bands and ameroid constrictors have been used extensively for slow attenuation of congenital portosystemic shunts in dogs. 2 Despite this fact, and the existence of research studies following placement around systemic and visceral blood vessels, there is still scant information about the exact behavior of these products when placed around a portosystemic shunt. Computed tomography is...

Irradiation for a period of 20min reduced the survival of conidia to 20%. The growth of irradiated conidia in the presence of bleomycin, mitomycin C or Esidrex is associated with a 2to 3-fold increase in the frequency of gene convertants, but was not accompanied by an increase in point mutants. When conjdia were grown on cellophane but otherwise treated as before the frequency of gene convertan...

Up to approximately 50 mug of staphylococcal enterotoxin A per plate was produced by cellophane-over-agar cultures. Enterotoxin was determined by a latex agglutination technique.

The cellophane-over-agar technique has been shown to give high titers of enterotoxins A, B, and C for routine testing of staphylococci for enterotoxigenicity.

Common transparent polymer films such as cellophane and household tape are frequently used examples of birefringent materials in textbooks classroom demonstrations. Qualitatively, birefringence is often demonstrated by layering between crossed-polarizers. In this work, we describe an inexpensive experimental setup for the quantitative measurement common films, suitable senior high school or und...