[Behavior of glycoproteins and blood serum proteins in rats after PVC implantation].

Determination of soluble protein level and bound sialic acid in 0,15 M SSA (seromucoid) as well as of protein levels and total sialic acid (NANA) were made both in blood serum and serous fluid. These tests were performed before and after subcutaneous and intra-abdominal implantation of different PVC samples. The subcutaneous implantation of samples caused the appearance of serous fluid and subsequently inflammation characterized by an increase of levels of sialic acid and seromucoid--the so-called "acute protein reaction".

Basic studies on autogenized and lysophilized vascular prostheses.

In an effort to improve vascular prostheses, basic studies on tissue-alloplastic prostheses according to a new conception were performed. A medical polyester yarn was used for the construction of three types of prostheses with different mesh and high porosity. The prostheses were autogenized on silicon rods and then lyophilized, resulting in their full intraoperative impermeability, but high biological permeability and antithrombogenicity.

[Comparative study of methods of estimating the hemolytic activity of aqueous plastic extracts. Preliminary report].

The examination of haemolytic activity of aqueous plastic extracts represents one of the method to evaluate plastics of medical grade. In own examinations different methods were used to estimate the haemolytic activity of aqueous extracts of some toxic materials, e.g.