细菌感染时,黏附于细胞上,除少数定植的细菌在表面引起局部感染外,大部分细菌还会侵入细胞内并扩散到其他的细胞、组织或全身而引起侵袭性感染。细胞的这一侵袭能力受其侵袭基因(invasive gene,inv)所控制,由inv基因编码产生的蛋白质称为侵袭素,它能特异性的识别宿主细胞膜上的多种蛋白, 使细菌能够直接粘附到细胞膜上,进而激活信号通路,使细菌被卷入宿主细胞内。它能介导这些细菌侵入邻近的上皮细胞,主要侵入到黏膜上皮细胞内
母乳是安全的,为婴儿提供其所需要的有益于其健康发育的营养素,并含有一些抗体,能保护婴儿免受儿童常见病的侵袭。
It is safe, gives babies the nutrients they need for healthy development and contains antibodies that help protect infants from common childhood illnesses.
结论甲状腺癌组织vegf、MMP - 9及e钙粘素的表达与甲状腺癌的侵袭及转移有关,可作为甲状腺癌患者的预后指标。
Conclusion The expression of VEGF, MMP-9, E-cadherin is associated with invasion and metastasis of thyroid carcinoma, which may serve as prognosis indexes of thyroid carcinoma.
探讨了整合素、细胞骨架、FAK在大肠癌侵袭转移中的信号转导机制。
And the mechanism of the signal transduction among integrin, cytoskeletons and FAK in the invasion and metastasis of CRC were explored.
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