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				           		这种细胞活性很像一次失控的免疫应答反应。
						        					            	 The cellular activity resembles an immune response that has spiraled out of control.
								    										 
								    				            	 youdao 
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				           		自然杀伤细胞对免疫系统的前线自然杀伤细胞活性。
						        					            	 Natural Killer cells are on the front lines of your immune system.
								    										 
								    				            	 youdao 
- 
				           		自然杀伤细胞对免疫系统的前线自然杀伤细胞活性。
						        					            	 Natural Killer cells are on the front lines of your immune system.
								    										 
								    				            	 youdao