Anaphylaxis

[摘要] This work is a continuation of a study of the antigenic properties of these organisms previously reported (1). The forms used were Euglena gracilis, Stichococcus sp., Chlamydomonas sp., and two species of Chlorella . In spite of the low agglutinin and precipitin titers obtained, experiments were carried out to determine whether it might be possible to sensitize guinea pigs to these organisms, either actively with a protein extract, or passively with the serum of the treated rabbits.The Dale test was carried out with 33 virgin guinea pigs. Table 1 summarizes the results with certain of these selected to report upon here.In the case of active sensitization to Euglena gracilis clearly positive reactions were obtained with the majority of living horns. Immune rabbit serum with a sedimentation titer as previously described did not passively sensitize. With the other antigens ten to twelve daily injections were necessary for sensitization.

[学科分类] 生物科学（综合）