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植物种子血凝素,例如从芸豆提取的植物血凝素(PHA),从刀豆提取的刀豆素A(Con.A)或从美洲商陆提取的商陆促有丝分裂因子(PWM)等等,在试管内刺激淋巴细胞可引起特有的淋巴细胞转化现象。最近无论在细胞学上或免疫学上都极其重视。不仅植物种子血凝素,革兰氏阴性菌的脂多糖(LPS)也能刺激B淋巴细胞使其活化。引起淋巴细胞活化,特别是淋巴细胞增殖的物质总称为促有丝分裂因子,其种类很多,作用也是多种多样的。促有丝分裂因子(Mitogen)作用于淋
Plant seed hemagglutinin, such as phytohemagglutinin (PHA) extracted from kidney bean, concanavalin A (Con. A) extracted from sword bean, or pokeweed mitotic factor (PWM) extracted from Pokeweed, etc. , In vitro stimulation of lymphocytes can cause a unique phenomenon of lymphocyte transformation. Recently, both cytology and immunology are extremely important. Not only plant seed hemagglutinin but also Gram-negative bacterial lipopolysaccharide (LPS) can stimulate B lymphocytes to activate them. The substances that cause lymphocyte activation, especially lymphocyte proliferation, are collectively referred to as mitogenic factors, and their variety and their effects are varied. Mitogen action in the leaching