[讨论] 认识我们身体的免疫功能
<P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 25pt; mso-line-height-rule: exactly"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt"><SPAN style="mso-spacerun: yes"> </SPAN><SPAN style="mso-spacerun: yes"> </SPAN><SPAN style="mso-spacerun: yes"> </SPAN></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 16pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">认识我们身体的免疫功能</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt"><?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></SPAN></B></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 31.5pt; LINE-HEIGHT: 25pt; mso-line-height-rule: exactly"><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 16pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">身体的免疫功能，就是指免疫系统在识别和排除异己物质过程中所产生的各种生物学效应。结果为有利、害两面：</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt"><o:p></o:p></SPAN></B></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 25pt; mso-line-height-rule: exactly"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt"><SPAN style="mso-spacerun: yes"> </SPAN>1</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 16pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">．免疫防御：指机体防御外来病原微生物的抗感染免疫，但在异常情况下若免疫反应过于强烈，可引起超敏反应，免疫功能过低或缺陷则表现为易受感染或免疫缺陷病。</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt"><o:p></o:p></SPAN></B></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 25pt; mso-line-height-rule: exactly"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt"><SPAN style="mso-spacerun: yes"> </SPAN>2</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 16pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">．免疫稳定：或称免疫自稳，是机体免疫系统内部的自控调节机制，以清除体内出现的变性、衰老死亡细胞等，若此功能失调，可导致自身免疫性疾病。</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt"><o:p></o:p></SPAN></B></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 25pt; mso-line-height-rule: exactly"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt"><SPAN style="mso-spacerun: yes"> </SPAN>3</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 16pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">．免疫监视：指免疫系统能够识别、清除体内各种突变细胞和防止持续感染。若失调可致肿瘤或持续病毒感染。</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt"><o:p></o:p></SPAN></B></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; TEXT-INDENT: 111.65pt; LINE-HEIGHT: 25pt; mso-char-indent-count: 6.95; mso-line-height-rule: exactly"><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 16pt; FONT-FAMILY: 黑体">黏膜免疫系统<SPAN lang=EN-US><o:p></o:p></SPAN></SPAN></B></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 25pt; mso-line-height-rule: exactly"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt"><SPAN style="mso-spacerun: yes"> </SPAN><SPAN style="mso-spacerun: yes"> </SPAN></SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 16pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">黏膜免疫系统（</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt">MIS</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 16pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">）是一个功能独特，相对独立免疫系统。皮肤、黏膜上皮在机体内部和外界环境之间构成了机体的第一道防线。呼吸道、消化道、泌尿生殖道等于外界相通的腔道是病原生物和许多有害物质入侵的重要途径，覆盖于这些腔道的黏膜具有防御这些抗原物质入侵的重要作用。它是执行局部特异性免疫功能的主要场所，黏膜免疫系统</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt">(MIS)</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 16pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">是免疫系统中一个特殊的组成部分。在成年人，它保护着</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt">400</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 16pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">平方米的黏膜面。</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt">50</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 16pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">％以上的淋巴组织存在于黏膜系统：</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt"><o:p></o:p></SPAN></B></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 25pt; mso-line-height-rule: exactly"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt"><SPAN style="mso-spacerun: yes"> </SPAN>(1)MIS</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 16pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">能分泌一类黏膜相关的免疫球蛋白，即分泌型免疫球蛋白</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt">A(sIg A)</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 16pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">．是黏膜免疫应答中主要的抗体。</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt"><o:p></o:p></SPAN></B></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 25pt; mso-line-height-rule: exactly"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt"><SPAN style="mso-spacerun: yes"> </SPAN>(2)MIS</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 16pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">具有黏膜定向的细胞运输系统，它可使黏膜滤泡中的细胞迁移至位于黏膜上皮下方的淋巴组织中。</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt"><o:p></o:p></SPAN></B></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 25pt; mso-line-height-rule: exactly"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt"><SPAN style="mso-spacerun: yes"> </SPAN>(3)MIS</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 16pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">内有一类能下调全身免疫应答的效应</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt">T</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 16pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">细胞。</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt"><o:p></o:p></SPAN></B></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 25pt; mso-line-height-rule: exactly"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt"><SPAN style="mso-spacerun: yes"> </SPAN>(4)</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 16pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">口服抗原较之其他途径更易诱导</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt">T</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN style="FONT-SIZE: 16pt; FONT-FAMILY: 宋体; mso-ascii-font-family: Times New Roman; mso-hansi-font-family: Times New Roman">细胞耐受。</SPAN></B><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt"><o:p></o:p></SPAN></B></P><P class=MsoNormal style="MARGIN: 0cm 0cm 0pt; LINE-HEIGHT: 25pt; mso-line-height-rule: exactly"><B style="mso-bidi-font-weight: normal"><SPAN lang=EN-US style="FONT-SIZE: 16pt"><SPAN style="mso-spacerun: yes"> </SPAN><o:p></o:p></SPAN></B></P> 学习了 唉!!!!太专业了,看不懂啊<br><br> 原文由 自由人 发表: 学习了 <P><FONT size=6>又学了一点医学知识</FONT></P> <FONT face=华文彩云 color=#f70909 size=7>长知识！</FONT><IMG src="http://www.china-ws.org/BBS/Htmleditor/omg_smile.gif"> <FONT color=#f70909 size=7>长知识！</FONT><IMG onmousewheel="return yuzi_img(event,this)" src="http://www.china-ws.org/BBS/Htmleditor/omg_smile.gif" onload="javascript:if(this.width>body.clientHeight)this.width=body.clientHeight" border=0><BR> <P align=left><FONT face=隶书><FONT color=#e61a1a size=7></FONT></FONT> </P><P align=left><FONT face=隶书><FONT color=#e61a1a size=7> 学习了，谢谢！</FONT></FONT></P>
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