[The role of atopic background in the genesis of allergic manifestations in intestinal parasitoses].

The previous literature and personal observations showed the predominant role of the atopic background in the appearance of the allergic manifestation in the parasitic infestation and especially in giardiasis. The lot investigated was made of 52 patients with allergic manifestations, also infested with Giardia intestinalis or with Ascaris lumbricoides. The hereditary collateral and personal allergic antecedents and the clearly deficient histaminopexy (1/20) were present in 1/2 of the patients.

Test of leukocyte migration inhibition. II. Comparative study of the techniques in capillary tubes and in agarose.

The object of the paper was to estimate the advantages and disadvantages of two techniques of the leukocyte migration inhibition (LMI) test (in capillary tubes and in agarose) for the in vitro testing of delayed type hypersensitization. The capillary technique was carried out according to Soborg and Bendixen and the agarose technique according to Clausen. The antigen used in both techniques was PPD in a concentration of 10 micrograms/ml.

Some aspects of cellular and humoral immunity in bronchial asthma and allergic rhinitis.

Blood lymphocyte subpopulations were investigated in 50 patients with allergic diseases (38 with allergic rhinitis and 12 with allergic bronchial asthma). The total T lymphocyte (Tt) count (E rosette test), the active T lymphocyte (Ta) count (active E rosette test) and the B lymphocyte count (EAC rosette test) were determined and the results were correlated with: 1) lymphocyte sensitization in vitro to different allergens and to PPD; 2) circulating immune complexes; 3) serum histaminopexic capacity. In allergic rhinites a decrease of Tt and B lymphocytes and an increase of Ta lymphocytes was observed.