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应用荧光标记的流式细胞分析技术，研究正常人外周血淋巴细胞膜表面ＣＤ２３表达。结果显示：外周血单个核细胞中ＣＤ２３＋细胞约占６％；Ｂ淋巴细胞中ＣＤ２３＋细胞比例最高为１６％左右；Ｔ淋巴细胞中有时也有１～２％的阳性检出率；ＰＭＡ活化后的Ｂ细胞中，ＣＤ２３＋细胞比例随刺激时间增加而升高，最高可达７０％；ＰＨＡ活化的Ｔ细胞中，ＣＤ２３＋细胞比例也可增加至１０％。从而表明，外周血中ＣＤ２３＋细胞主要分布于Ｂ细胞群中，活化能显著诱导ＣＤ２３分子在Ｂ细胞上的表达。活化后的Ｔ细胞也能部分表达ＣＤ２３分子。
Fluorescence-labeled flow cytometry was used to study CD23 expression on the surface of normal human peripheral blood lymphocytes. The results showed that the percentage of CD23 + cells in peripheral blood mononuclear cells was about 6%, the percentage of CD23 + cells in B lymphocytes was about 16%, the positive detection rate of T lymphocytes was 1-2% In the cells, the proportion of CD23 + cells increases with the stimulation time, up to 70%. In PHA-activated T cells, the proportion of CD23 + cells can also be increased to 10%. Thus, CD23 + cells in peripheral blood are mainly distributed in B cell population, and activation can significantly induce the expression of CD23 on B cells. Activated T cells can also partially express CD23 molecules.