...细胞免疫反应，我们评估的16个非霍奇金淋巴瘤患者自体免疫独特型免疫球蛋白分子的变化肿瘤特异性细胞毒性T淋巴细胞的前体（ CTLp ）频率使用有限稀释分析。 11例有显着增加肿瘤特异性CTLp 。
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至胎儿六周时，真皮也仅仅是酸性粘多糖池，散在分布着树状细胞，它是成纤维细胞的前体。
Until the sixth week of fetal life, the dermis is merely a pool of acid-mucopolysaccharide-containing, scattered dendritic-shaped cells, which are the precursors of fibroblasts.
然后，T细胞的前体前往胸腺——一个位于胸骨下的小器官，在那里，它们被叫做早期胸腺祖细胞(ETPs)。
The T-cell precursors then go to the thymus, a small organ located under the breastbone, where they are called early thymic progenitors (ETPs).
新的研究成果表明多发性硬化症损害了身体自然修复神经鞘的机制：尽管出现了修复细胞的前体物质，但是还没有成熟到具有功能。
New research indicated that MS impairs the body's natural mechanism for repairing myelin: Although precursors to the repair cells are present, they never mature enough to do their jobs.
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