简单组织（simple tissue）：由单一类型 细胞构成的组织称为简单组织。 复合组织（complex tissue）：由多种类 型细胞构成的组织称为复合组织。
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·2,447,543篇论文数据，部分数据来源于NoteExpress
In studies with mice, tattooing a vaccine produced 16 times more antibodies than a simple injection into muscle tissue.
BBC: More antibodies are created with the tattooing method
Doctors advise using "simple but effective" hygiene measures such as frequent hand-washing, covering your mouth with a tissue when coughing and sneezing, and putting the tissue into a bin.
BBC: More call handlers for swine flu
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