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- Because thymic dendritic cells are the potent antigen presenting cells in the thymus, they must play an important role in thymic negative selection. 胸腺树突状细胞作为胸腺内功能强大的抗原呈递细胞,在阴性选择中必定发挥着不可忽视的作用。
- During breeding for vertical resistance, horizontal resistance tends to decline because of negative selection pressure. 当培育垂直抗性时，由于负的选择压力，水平抗性趋于下降。
- The process of thymic negative selection is the process of the central immunologic tolerance, namely the process of autoreac-tive thymic cells being deleted or becoming allergy. 胸腺内阴性选择的发生过程也就是中枢免疫耐受的形成过程,即自身反应性胸腺细胞被克隆清除或处于免疫无能状态的过程。
- Through positive and negative selection, the thymocytes with high avidity for self peptide-MHC complex were eliminated, but retained low but significant reactivity for self-peptides. 近年有关外周T细胞群体存活与稳态的深入研究发现:抗原活化前T细胞的存活需要自身肽MHC复合物的作用以提供适度的存活信号;
- Dendritic cell and thymic negative selection 树突状细胞和胸腺阴性选择
- In this paper, negative selection algorithm for artificial immune system (AIS) is improved by adopting genetic algorithm, in which Euclidean distance is selected as fitness function, to generate detectors (antibodies). 摘要将人工免疫系统的反面选择算法作了改进，在产生检测器时，利用了遗传算法，并将欧几里德距离作为遗传算法中的适应函数。
- The DCs in the thymus have )been subdivided into two populations, lymphoid DCs and myeloid DCs.They can induce negative selection of effective T cells and positive selective of regulatory T cells. 胸腺中树突状细胞分为淋巴源性和髓源性,参与效应性T细胞的阴性选择和调节性T细胞的阳性选择过程。
- multi - level negative selection 多级否定选择
- negative selection in cell culture 增减细胞负选择法
- Evolutionary Negative Selection Algorithms 进化非选择算法
- real - valued negative selection algorithm 实值反向选择算法
- real-valued negative selection algorithms 实值否定选择算法
- evolutionary negative selection algorithm 进化非选择算法
- The answer to my request was in the negative. 对我的请求的答复是否定的。
- Abstract: To improve the efficiency of targeted gene replacement (TGR), a dual screen (DS) system with gusA gene as negative selective marker (GUS-DS) was developed in Magnaporthe oryzae. 摘 要: 目标基因替换是基因功能研究的重要方法, 在生物工程领域广泛应用。
- His answer to my request was a negative. 我的请求遭到了他的拒绝。
- The tests for hepatitis were negative. 肝炎检查结果是阴性。
- That shop has a fine selection of cakes. 那家商店有各种精美的糕点供我们选择。
- Their criticism was not negative. 他们的批评并不是负面的。
- That store has a good selection of furniture. 那家店有很多家具可供挑选。
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