The use of bovine lens capsule basement membrane as a model substratum for studies of invasion and extravasation by metastatic tumor cells is described. The abilities of three inde pendently isolated pairs of metastatic variant cell lines to digest the purified substrates, laminin, type IV collagen, and type I collagen, were compared with their abilities to solubilize isotope from 125l-labeled ...

1989 was the 40th anniversary of intra-ocular lens implantation. Harold Ridley performed the first implant for cataract surgery in November 1949 at St. Thomas' Hospital. The idea developed on the following lines: It was known that trauma from plastic imbedded in the eye was inert, a situation seen mainly in air pilots who had suffered injuries from shattered windscreens. But the seed was sown b...

The use of bovine lens capsule basement membrane as a model substratum for studies of invasion and extravasation by metastatic tumor cells is described. The abilities of three independently isolated pairs of metastatic variant cell lines to digest the purified substrates, laminin, type IV collagen, and type I collagen, were compared with their abilities to solubilize isotope from 125I-labeled l...

A simple homemade microscope has been devised using a single water droplet lens, which proved to be practical for classroom use in school. In order to prevent evaporation of water, the water droplet lens was encapsulated in a plastic vessel together with wetted paper. By changing the amount of water in a metal ring (4.5 mm diameter with thickness 0.6 mm) attached to the bottom of the plastic ve...

For much of the Caribbean, plastic pollution and great Atlantic Sargassum belt has led to significant regional loss. To elevate these problematic areas, we present a novel calcium alginate bioplastic process from lens techno-economic life cycle assessments.

Intraocular foreign body constitutes the 18-41% of penetrating eye injuries. Ten percent of these are localized intralenticularly. Depending on the severity of the trauma and the degree of the disruption of the structural integrity of the lens capsule, crystalline lens can lose its transparency and cataract surgery is needed. Metallic foreign bodies are observed most frequently. In case of iner...

[1] Plastic sea ice rheologies that employ teardrop and parabolic lens yield curves and allow varying biaxial tensile stresses have been developed. These rheologies, together with the previously developed ellipse and Mohr-Coulomb-ellipse rheologies, are implemented in a thickness and enthalpy distribution sea ice model to examine the rheological effect in numerical investigations of arctic clim...