方法应用重导向细胞毒实验，探讨了PTA1分子对混合淋巴细胞反应中活化的NK细胞杀伤作用的影响。
Methods Redirected cytotoxicity assay (RCA) was used to detect the effect of PTA1 on cytotoxicity of NK cells generated from mixed lymphocyte culture (MLC).
这种抽油机以连杆式换向机构取代原有的十字滑块式换向架，以重块平衡代替气平衡，并改进了导向系统。
The new unit uses the pitman reserse mechanism instead of the crosshead slide reverse rack, adopts weight balancing instead of air balancing, and is provided with an improved guiding system.
对于流体的控制和关闭等，阀芯的导向十分重要，阀芯导向用于阀芯和阀座的对中配合。
Right In the fluid control and shut down and so on, spool orientation is important for the spool valve core and valve.
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