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- 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. 近年有關(guān)外周T細胞群體存活與穩態(tài)的深入研究發(fā)現:抗原活化前T細胞的存活需要自身肽MHC復合物的作用以提供適度的存活信號;
- Switched capacitor( SC) unit delayer, positive negative proportors and adder were designed using two phase clocks. 用二相時(shí)鐘設計了對寄生電容低靈敏的開(kāi)關(guān)電容單位延時(shí)器、負比例器和加法器.
- Hybrid supercapacitors were fabricated using Ni (OH)_2 positive negative and electrodes of activat- ed carbon. 以Ni(OH)_2和活性炭為正負極組成復合電化學(xué)電容器。
- Because thymic dendritic cells are the potent antigen presenting cells in the thymus, they must play an important role in thymic negative selection. 胸腺樹(shù)突狀細胞作為胸腺內功能強大的抗原呈遞細胞,在陰性選擇中必定發(fā)揮著(zhù)不可忽視的作用。
- Methods Using positive negative blend grouping to detect ABO blood group, and compared with normol subjects. 方法用臨床常規的正反定型法對病人ABO血型檢測，并與正常人血型對照。
- During breeding for vertical resistance, horizontal resistance tends to decline because of negative selection pressure. 當培育垂直抗性時(shí)，由于負的選擇壓力，水平抗性趨于下降。
- The Heavy Duty pressure gauges with capsule element are used to measure small positive negative gauge pressures in gaseous media. 膜盒壓力表用于測量氣體介質(zhì)的正負微過(guò)壓。
- 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. 胸腺中樹(shù)突狀細胞分為淋巴源性和髓源性,參與效應性T細胞的陰性選擇和調節性T細胞的陽(yáng)性選擇過(guò)程。
- It was found that the coinci- deuce of immunohistochemistry and western blotting with the true positive negative cases is 100%, and the co- incidence of ELISA is somewhat lower. 通過(guò)比較發(fā)現免疫組化及免疫轉印法與標準品真實(shí)情況的符合率均為100%25，ELISA的符合率稍差。
- 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. 胸腺內陰性選擇的發(fā)生過(guò)程也就是中樞免疫耐受的形成過(guò)程,即自身反應性胸腺細胞被克隆清除或處于免疫無(wú)能狀態(tài)的過(guò)程。
- The first two coupled regimes are characterized by the relationships between the warm cold phase of ENSO episodes and positive negative phase of PNA patterns. 第一個(gè)和第二個(gè)耦合流型域以ENSO事件冷暖位相與北太平洋／北美區的正負位相PNA型之間的關(guān)系為主要特征。
- The mathematical model of the constrained positive negative term geometrical programming duality method, the relationship between the original and the duality programming, and the algorithmic steps are briefly reviewed. 本文對約束正負項式幾何規劃對偶法的數學(xué)模型、規劃問(wèn)題和對偶規劃問(wèn)題之間的關(guān)系和算法步驟作了簡(jiǎn)要介紹。
- Dendritic cell and thymic negative selection 樹(shù)突狀細胞和胸腺陰性選擇
- There is positive proof that he did it. 有確切的證據證明他做了此事。
- 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). 摘要將人工免疫系統的反面選擇算法作了改進(jìn)，在產(chǎn)生檢測器時(shí)，利用了遺傳算法，并將歐幾里德距離作為遺傳算法中的適應函數。
- positive negative ambivalent quotient 正負矛盾情緒商
- multi - level negative selection 多級否定選擇
- PNPB positive negative pressure breathing 正負壓呼吸
- negative selection in cell culture 增減細胞負選擇法
- positive negative pressure ventilation 正負壓通氣
