[Normal rabbit sera. An immunologic and immunohistologic study].

Reported in this paper are results obtained from immunological and immunohistochemical studies into non-immune rabbit sera which were tested for various antimycobacterial antibodies. 11% of the sera were found to be positive by transmigration electrophoresis, while antibodies against mycobacteria were recorded from 94% of all rabbits by peroxidase-antiperoxidase (PAP), an immunohistological technique of higher sensitivity. Several owners had kept rabbits together with fowl, which was considered to be one of the causes of very high contamination of rabbit stock with mycobacterial antigens.

[Immunohistochemical studies of bronchial carcinoma using monoclonal antibody A63-C/A3].

An immunohistological study was undertaken, using paraffin sections of 22 cases of lung carcinoma and a number of reference tissue samples, to clear up the reactivity of A63-C/A63 monoclonal antibody (IgM) which was capable of identifying a carcinoma-associated carbohydrate antigen. Following neuraminidase pretreatment of those sections, positive response to the above antigen was produced by more than 90% of all bronchial carcinoma samples, notwithstanding the histological type involved (squamous-cell carcinoma or adenocarcinoma). Columnar epithelium of the bronchi, not involved in the neoplastic process gave a positive immunoreaction with the antibody A63-C/A3 in 64% of the cases.

[Quantitative-morphometric characterization of the lung structure in congenital heart defects exemplified by Fallot disease and isolated ventricular septal defect].

The aim of this study was to investigate the possibility of determination of lung changes in congenital deformity of heart and vessels by the method of Weibel and Elias (1967) for count of points in the lung (volume of alveoli and interstitium). The results show that this method is suitable for the estimation of quantitative changes in Morbus Fallot. In order to decide the degree of arteriosclerosis an additional measurement of the wall thickness of lung vessels is necessary in cases of ventricular septal defect.

[Ultrasound diagnosis of severe fetal abnormalities].

Reported in this paper is a case of premature termination of pregnancy in the 29th week because of sonographically diagnosed multiple malformations of the fetus. Holoprosencephaly, omphalocele, polyspleny syndrome, double-outlet right ventricle, and several skeletal malformations were established by pathologico-anatomic investigations. Possible correlation between these malformations are discussed in some details.

[Architectonic characteristics of the heart ventricles in a perimembranous defect of the interventricular septum].

The results of quantitative morphological macro-, micro-, and ultrastructural (myocardial biopsies) studies of the ventricles with perimembranous septal defect in 135 infants under the age of one year have been compared. In newborns there appeared ventricular myocardial hyperplasia and low absolute and relative values of all the myocardial parameters versus normal control. At the age of 3 months the parameters were similar to or above the control ones exceeding them considerably by the age of 10-12 months.