The main object of this paper is to report measurements made on a small series of human synovial fluids and on a few sheep and ox fluids. These measurements were made in order to test the two methods suggested by Ogston & Stanier (1953 a) for detecting differences of the specific properties of the hyaluronic acid as it occurs in synovial fluids. These methods, both of which are based on viscosi...

BACKGROUND The developing visual system in Drosophila melanogaster provides an excellent model with which to examine the effects of changing microenvironments on neural cell migration via microfluidics, because the combined experimental system enables direct genetic manipulation, in vivo observation, and in vitro imaging of cells, post-embryo. Exogenous signaling from ligands such as fibroblast...

Abstract. A simple method based on laser beam deflection to study the variation of diffusion coefficient with concentration in a solution is presented. When a properly fanned out laser beam is passed through a rectangular cell filled with solution having concentration gradient, the emergent beam traces out a curved pattern on a screen. By taking measurements on the pattern at different concentr...