在胎盤膜的阻隔下，胎兒與母親各自有著自己的血液循環系統。雖然各自的血液不會混和在一起，但氧氣、營養、代謝物及某幾種類別的抗體卻能夠通過胎盤網的微孔，互相在母子母女之間作出交換。636Please respect copyright.ＰＥＮＡＮＡtEuPXfRHai
636Please respect copyright.ＰＥＮＡＮＡbKEo1wgC6K
636Please respect copyright.ＰＥＮＡＮＡfVfnqvAlCW
在母親懷孕的時期，其自身的一部份抗體將會經由胎盤傳送到胎兒的循環系統裡頭，為他或她抵禦外來物種的侵襲;636Please respect copyright.ＰＥＮＡＮＡGsjQyDaA1c
胎兒的免疫系統在母體裡頭並未能夠發展得盡善盡美的關係，母親的協助是非常重要的。636Please respect copyright.ＰＥＮＡＮＡMTUyVdVni1
636Please respect copyright.ＰＥＮＡＮＡG4gDx8D974
這種無私的幫助看起上來的確非常美好，但無奈魔鬼在細節，當中亦牽伸出一個重要的問題ㄧ636Please respect copyright.ＰＥＮＡＮＡ87f1l5NLRA
636Please respect copyright.ＰＥＮＡＮＡEjDxPQVron
抗體的母嬰利益輸送，無形間造就了母體的抗體攻擊胎兒紅血球的契機，引起醫學界所稱為的「新生兒溶血症」(Hemolytic disease of the newborn,HDN)。636Please respect copyright.ＰＥＮＡＮＡqoAPpD0Gm9
636Please respect copyright.ＰＥＮＡＮＡRalz0ZMKs2
新生兒溶血症的嚴重性取決於胎兒紅血球被收抗體所攻擊的程度，若果被幹掉的紅血球數量並不算多的話，胎兒通常均能自我抵禦得住，當中有機會產生輕微貧血或黃疸症狀，情況不太嚴重的話並不需要作出任何治療。636Please respect copyright.ＰＥＮＡＮＡulOg6wIGRN
636Please respect copyright.ＰＥＮＡＮＡwR6nZiRgPz
但是，若果紅血球被過量分解的話，身體裡頭的膽紅素便會不斷的積聚下來。胎兒若果還在母體的話，膽紅素尚可經由胎盤透過血液系統傳遞到母親的肝臟裡頭作出分解，由母親為孩兒作出分擔。636Please respect copyright.ＰＥＮＡＮＡos8MT9mPRL
636Please respect copyright.ＰＥＮＡＮＡG33k6L6aBE
若胎兒脫離母體，尤其是在出世後首二十四小時裡頭發生紅血球被過量分解情況的話，情況就真的是不堪設想;636Please respect copyright.ＰＥＮＡＮＡBkxqsS8wZr
636Please respect copyright.ＰＥＮＡＮＡkUTkSZVwMM
胎兒肝臟在初出世的期間並沒有足夠的能力分解過多的膽紅素，膽紅素的血液濃度會逐漸的增加，最終更會進入腦部，做成永久性的神經損毀。636Please respect copyright.ＰＥＮＡＮＡLsY1FXjWjl
636Please respect copyright.ＰＥＮＡＮＡGwGLTICzgM
636Please respect copyright.ＰＥＮＡＮＡCeVoG1VVEq
636Please respect copyright.ＰＥＮＡＮＡ23XfylPLgC
636Please respect copyright.ＰＥＮＡＮＡGZ9NYASJ1j
在新生兒溶血症方面，Rh系統的D antigen對比於ABO系統的H antigen顯得較為重要。636Please respect copyright.ＰＥＮＡＮＡXG7Y2TMum4
636Please respect copyright.ＰＥＮＡＮＡ2BrhYCyG3W
主要的原因分別有兩個，第一就是胎兒紅血球上的H antigen數量比成人紅血球為顯注的少，故此不太容易會觸發免疫反應。636Please respect copyright.ＰＥＮＡＮＡj7Nf5wBYvK
636Please respect copyright.ＰＥＮＡＮＡKqi8ROHS6c
第二就是ABO系統的H antigen並不局限於在紅血球，在胎兒各種表皮及內膜的細胞上均能找到H antigen，因此母體的H antigen抗體遇上胎兒紅血球上的H antigen機會亦相對地大大減少;636Please respect copyright.ＰＥＮＡＮＡ9UTBmlCK1X
636Please respect copyright.ＰＥＮＡＮＡZdA3jOSW6F
相反，Rh系統的D antigen只會在紅血球上找到，其他器官及細胞並不存在D antigen，母體的D antigen抗體將會針對性的攻擊胎兒紅血球。636Please respect copyright.ＰＥＮＡＮＡdrebCqFCdP
636Please respect copyright.ＰＥＮＡＮＡpj3YcPxCi2
636Please respect copyright.ＰＥＮＡＮＡyKT9mE0QjA
正因如此，在絕大多數的情況下，新生兒溶血症引致的致命情況均是由母體及胎兒的Rh系統不相容引起的。636Please respect copyright.ＰＥＮＡＮＡ8ljbsaOUbk
636Please respect copyright.ＰＥＮＡＮＡIhdtLEptRL
(亞洲人的族裔，約只有百分之二的人口持有Rh負血型。)636Please respect copyright.ＰＥＮＡＮＡsywZk8mgZn
____________________________________636Please respect copyright.ＰＥＮＡＮＡQ6jON04A99
636Please respect copyright.ＰＥＮＡＮＡaKyO0PqBgx
「克BB，我血型是A-哦，你呢?」636Please respect copyright.ＰＥＮＡＮＡaRchKWaxkZ
得悉Rh正負系統的重要性後，坐在席上的一位女生跟在旁的男同學嬌嗲的說了起來。636Please respect copyright.ＰＥＮＡＮＡluTtgHDobL
636Please respect copyright.ＰＥＮＡＮＡ2zihWK6J1p
「我是B+....」636Please respect copyright.ＰＥＮＡＮＡaF5IES3i6i
那名姓克的男生單手拿著捐血卡，神態自若的說著。636Please respect copyright.ＰＥＮＡＮＡPZYkGWFD70
636Please respect copyright.ＰＥＮＡＮＡfqy4wfrj0L
「吓.....? 正? 為甚麼你會這樣不差氣的?636Please respect copyright.ＰＥＮＡＮＡbMWUeVee1t
我很喜歡小孩子的哦，那怎樣辦呀，BB?」636Please respect copyright.ＰＥＮＡＮＡEPSaxfr25h
636Please respect copyright.ＰＥＮＡＮＡ13gKfwGSu4
636Please respect copyright.ＰＥＮＡＮＡySpFkpFDxc
女生負(沒有D antigen)，男生正(有D antigen)，嬰兒便有機會是正(50或100%有D antigen)。636Please respect copyright.ＰＥＮＡＮＡEh0zguHtcI
女生本身的紅血球沒有D antigen，嬰兒紅血球上的D antigen便會被視作為外來之物，被母體的免疫系統攻勢，引發新生兒溶血症出現的可能性; 那名女生是這樣的想著。636Please respect copyright.ＰＥＮＡＮＡ1bTQKaG00j
636Please respect copyright.ＰＥＮＡＮＡVM9WiIDQWH
636Please respect copyright.ＰＥＮＡＮＡdzbq7YAPxQ
「喂，靚女，我姓馬，血型B-，名副其實是你的駙馬呢!636Please respect copyright.ＰＥＮＡＮＡr2X9QiwZLu
有沒有興趣下課後一起看電影，互相了解一下對方?」636Please respect copyright.ＰＥＮＡＮＡYerFsLVM7f
那名女生身後的一名男生，洋洋得意不知羞恥的作出搭訕起來。636Please respect copyright.ＰＥＮＡＮＡGov1cJOAak
636Please respect copyright.ＰＥＮＡＮＡxqyxZfdlNw
636Please respect copyright.ＰＥＮＡＮＡIohBHpzoP2
女生負(沒有D antigen)，男生負(沒有D antigen)，嬰兒便一定會是負(沒有D antigen)，新生兒溶血症的發生機會亦因而大大減低。636Please respect copyright.ＰＥＮＡＮＡQ12DR6k8tI
636Please respect copyright.ＰＥＮＡＮＡ5c6UaKhWoO
636Please respect copyright.ＰＥＮＡＮＡU891je94aC
「我對克BB的愛並不會因為這些正正負負影響得到的，你別痴心妄想啦!」636Please respect copyright.ＰＥＮＡＮＡFeEpUmLIpb
那名女生大聲的作出責罵後，隨即窩在那名男生的懷中，展示出自己的恩愛。636Please respect copyright.ＰＥＮＡＮＡLOBDWKchO7
636Please respect copyright.ＰＥＮＡＮＡrblpqDo17z
636Please respect copyright.ＰＥＮＡＮＡbktI30jOLN
636Please respect copyright.ＰＥＮＡＮＡ15hltvLg4W
「唉，你也不是我的伯樂嗎....?636Please respect copyright.ＰＥＮＡＮＡwzkDywcTPS
世間上的伯樂全都死掉了嗎?636Please respect copyright.ＰＥＮＡＮＡGi1gyDcAXP
636Please respect copyright.ＰＥＮＡＮＡ38fTxb8r7m
我這隻絕世好馬，究竟應如何在這亂世中自處呢，天呀!」636Please respect copyright.ＰＥＮＡＮＡjkVRqjEFut
那名姓馬的男生右手撥了一下頭上時髦的「花倫同學」的髮型，一臉恨鐵不成鋼的模樣。636Please respect copyright.ＰＥＮＡＮＡqA4UM3DCb6
636Please respect copyright.ＰＥＮＡＮＡ58rNHRxcLo
636Please respect copyright.ＰＥＮＡＮＡk7ghsFLFaj
636Please respect copyright.ＰＥＮＡＮＡCs8MQ7qKNw
「其實，第一胎出現新生兒溶血症的機率應該是相對的較低吧!636Please respect copyright.ＰＥＮＡＮＡfRyJgsqbtm
再加上現今科技如此先進，一定會有方法解決Rh正負所引起的問題!」636Please respect copyright.ＰＥＮＡＮＡJTYd0YEFCj
姓克的那位男生托了一下眼鏡，用著安慰的語氣對著那名女生說了起來。636Please respect copyright.ＰＥＮＡＮＡVQtU6LnBEC
636Please respect copyright.ＰＥＮＡＮＡZLNMYuMd8Y
636Please respect copyright.ＰＥＮＡＮＡ3jjoKno4mz
馬同學、克同學及其在旁女生的對話，血時均聽得一清二楚。636Please respect copyright.ＰＥＮＡＮＡWBwANHvp8i
對於克同學的見解，血時可是非常的認同。636Please respect copyright.ＰＥＮＡＮＡPBHeeFkyg5
636Please respect copyright.ＰＥＮＡＮＡsgwPUlkhrD
「這位男同學說得一點也沒有錯!」636Please respect copyright.ＰＥＮＡＮＡTRnYbpP73C
636Please respect copyright.ＰＥＮＡＮＡBaeIH8kVig
胎兒和母體的血液循環系統均是獨立的個體，胎兒的紅血球在正常情況下是不會進入母體血液循環裡頭的。636Please respect copyright.ＰＥＮＡＮＡovRYf924uP
636Please respect copyright.ＰＥＮＡＮＡ270JIUewhZ
在Rh血型為負的母親來說，除非曾經在輸血過程中接受過擁有D antigen的血液，否則在自身的血液裡頭間理應是不會存有D antigen的抗體;636Please respect copyright.ＰＥＮＡＮＡDM46zJvAih
636Please respect copyright.ＰＥＮＡＮＡrr29px73Ex
這亦是Rh系統和ABO系統其中一種不同的地方，ABO的H antigen和天然間所存在的糖分結構非常相似。長久接觸底下，正常人體的血液均存在著對應的H antigen抗體。636Please respect copyright.ＰＥＮＡＮＡ0H6wTKfmW4
636Please respect copyright.ＰＥＮＡＮＡTK5JWpHEWQ
636Please respect copyright.ＰＥＮＡＮＡHw7Pr7696g
636Please respect copyright.ＰＥＮＡＮＡQDfzm2TV8q
雖則胎盤阻隔著母子的血液循環系統，但在母親產下第一胎的期間，過程中將會有很大的機會與胎兒的血液接觸。636Please respect copyright.ＰＥＮＡＮＡDrDskVYPh7
若胎兒為Rh正而母親為Rh負的話，這便會觸發母親體內D antigen抗體的產生;636Please respect copyright.ＰＥＮＡＮＡh5EbysCSRm
636Please respect copyright.ＰＥＮＡＮＡ2mT7GAtXve
只不過，若果母親的ABO血型與胎兒的ABO血液不吻合的話，母親體內的H antigen抗體將會快速消除胎兒的紅血球，這時候D antigen暴露於母體免疫系統的機會亦會相對減低，有機會可以避免D antigen抗體的產生。636Please respect copyright.ＰＥＮＡＮＡUTXfAzqrHR
636Please respect copyright.ＰＥＮＡＮＡtdxLKm5jq9
636Please respect copyright.ＰＥＮＡＮＡR4He7JdPwK
無論如何，這些由第一胎臨盤而產生出來的D antigen抗體，將會有很大的機會影響第二胎Rh正的胎兒。636Please respect copyright.ＰＥＮＡＮＡWgBSEG3Z4e
636Please respect copyright.ＰＥＮＡＮＡ42LHJ0f7AP
不過不用害怕，現今醫療科技發達，醫生均有著各種手段檢查胎兒的狀況，亦有各種方法檢測母體及胎兒的ABO及Rh血型。636Please respect copyright.ＰＥＮＡＮＡHVbAmNH8fd
在某幾種情況下更會為母親注入D antigen的抗體，避免母親接觸到外來的D antigen，必要時更可為在母體內的胎兒輸血，更換死去的紅血球細胞。636Please respect copyright.ＰＥＮＡＮＡt9Uw1qTiq2
636Please respect copyright.ＰＥＮＡＮＡjZIRyt10E1
636Please respect copyright.ＰＥＮＡＮＡmpYQCAd0du
636Please respect copyright.ＰＥＮＡＮＡNDOW4jWpSM
因Rh系統不吻合而不能作出敦倫的情況，在現今的社會上是不會發生的。636Please respect copyright.ＰＥＮＡＮＡog2ga7MChM
636Please respect copyright.ＰＥＮＡＮＡJRw8jpcbuL
636Please respect copyright.ＰＥＮＡＮＡEGlFWOkqt4
______________________________________636Please respect copyright.ＰＥＮＡＮＡm3CUNiqfEr
636Please respect copyright.ＰＥＮＡＮＡO1dkIkNkDW
636Please respect copyright.ＰＥＮＡＮＡdiaYB9z4Ny
鈴...鈴...鈴.....636Please respect copyright.ＰＥＮＡＮＡ0idrsqIzYg
636Please respect copyright.ＰＥＮＡＮＡQgTdJO90vN
講解的時間過得特別快，說到Rh血液系統的時候下課鐘聲亦恰巧的響起。636Please respect copyright.ＰＥＮＡＮＡmjbM7Oplxh
636Please respect copyright.ＰＥＮＡＮＡI2lBDfvIfn
血時迅速的收拾個人物品，啪啪聲的關上電腦，比在座的學生們更快的離開演講廳。636Please respect copyright.ＰＥＮＡＮＡMDjK354u0R
636Please respect copyright.ＰＥＮＡＮＡn5L2Q7PJN5
636Please respect copyright.ＰＥＮＡＮＡZ9sHFaDEoJ
「血..血時教授...」636Please respect copyright.ＰＥＮＡＮＡgcoVM64k2O
那名為茱燕的女同學本意是在下課的時候找血時商量一些事情的，奈何血時的行動實在過於迅速，她完全找不到任何的機會喝停血時。636Please respect copyright.ＰＥＮＡＮＡLMD5euoeSv
636Please respect copyright.ＰＥＮＡＮＡqoGKrFPelK
636Please respect copyright.ＰＥＮＡＮＡZjlygGz6ML
636Please respect copyright.ＰＥＮＡＮＡdLQDDvHlLE
「......」636Please respect copyright.ＰＥＮＡＮＡEYKCrRKPnf
她打開演講廳的門口，四周張望，只見血時往著月亮咖啡店的方向奔跑起來。636Please respect copyright.ＰＥＮＡＮＡm8DUgDiUH6
636Please respect copyright.ＰＥＮＡＮＡ87yWCB6C7e
636Please respect copyright.ＰＥＮＡＮＡ1VtMN7mJe4
「你...沒吃早餐嗎?」636Please respect copyright.ＰＥＮＡＮＡTsImWLC4Fh
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