Effect of tuftsin on the leucyl aminopeptidase activity of the subcellular components in cerebral cortical formations

It can be concluded from the results that XCM reversibly reduced the ability of red cells to undergo deformation and that this reduction is concentration-dependent and can be arranged in the following order: bilimin > 76% triombrast = iodamide-380 > 20% bilignost > 50% bilignost > metrizamide. The action of triombrast, iodamide, and metrizamide on red cell deformability is attributable to the osmotic activity of their solutions and is linked with an increase in viscosity of the internal centers of the red cells. For angiourography it is therefore preferable to use the new nonionic XCM of metrizamide type, with low osmotic activity.