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자료유형
학술저널
저자정보
박경숙 (Department of Biology, Sungshin Womens University) 이인숙 (Departmemt of Biological Science. Ewha Womans University) 로분조 (Departmemt of Biological Science. Ewha Womans University) 목제원 (Department of Biology, Sungshin Womens University)
저널정보
한국통합생물학회 Korean journal of biological sciences Korean journal of biological sciences 제2권 제1호
발행연도
1998.1
수록면
107 - 111 (5page)

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Two kinds of humoral factors were observed in 2 orders, 7 families, 10 genera, and 15 different species of Korean ascidians. They are the naturally occuring hemagglutinins and/or hemolysins against human erythrocytes A, B, and 0. All but two species showed aggregative activity, although there were considerable variations in titer. The weak agglutinating and lytic activities were increased in the presence of $Ca^{++}$. Much higher activities of agglutination and/or lysis were shown in the hemolymph than extracts from tissues, and a higher response was shown in adults than in juveniles. No distinct differences from collected locations were observed. The hemolymph of Ciona intestinalis showed a strong hemolytic (cytotoxic) and weak agglutinins capacities. In addition, hemolymph of Styela plicata and Styela clava clava also showed hemoagglutining and hemolytic activities. Botryllus tuberatus had hemagglutining and weak lytic activities. Other species showed only hemagglutining activity. These agglutining activities are probably responsible for carbohydrate recognition in solitary or colonial ascidian. The lytic activity is probably responsible for antibacterial defense and nonfusion reactions between allogeneic colonial ascidians, especially the genus of Botryllus. The occurrences of humoral factors in ascidians were independent of their geographic distributions.

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