絕大多數培養基是建立在平衡鹽溶液(BSS)基礎上,添加了氨基酸、維生素和其它與血清中濃度相似的營養物質。最廣泛應用的培養基是Eearle`s MEM 的混合物,其中含有13種必須氨基酸、8種維生素。而Ham`s F12 也包括非必須氨基酸,維生素的範圍亦很廣,另外常規含有無機鹽和代謝添加劑(例如核苷酸)。MEM/F12 這兩種培養基各取1/2,形成神經生物學最通用的培養基。Dulbecco`s改良培養基――DMEM,現應用於快速生長的細胞,同MEM含有相同的營養成分,但濃度高出2~4倍(bei)。選(xuan)擇(ze)某(mou)種(zhong)培(pei)養(yang)基(ji),應(ying)仔(zai)細(xi)了(le)解(jie)成(cheng)分(fen)表(biao),應(ying)知(zhi)道(dao)大(da)多(duo)數(shu)情(qing)形(xing)下(xia)培(pei)養(yang)基(ji)都(dou)有(you)不(bu)足(zu)。例(li)如(ru),有(you)些(xie)培(pei)養(yang)基(ji)在(zai)氨(an)基(ji)酸(suan)中(zhong)包(bao)括(kuo)有(you)穀(gu)氨(an)酸(suan),而(er)這(zhe)種(zhong)培(pei)養(yang)基(ji)雖(sui)廣(guang)泛(fan)用(yong)於(yu)神(shen)經(jing)生(sheng)物(wu)學(xue)領(ling)域(yu),但(dan)它(ta)對(dui)某(mou)些(xie)對(dui)穀(gu)氨(an)酸(suan)敏(min)感(gan)的(de)可(ke)能(neng)有(you)細(xi)胞(bao)外(wai)毒(du)性(xing)損(sun)傷(shang)的(de)神(shen)經(jing)元(yuan)而(er)言(yan),則(ze)並(bing)非(fei)最(zui)佳(jia)選(xuan)擇(ze),特(te)別(bie)是(shi)如(ru)果(guo)神(shen)經(jing)元(yuan)生(sheng)長(chang)在(zai)缺(que)乏(fa)膠(jiao)質(zhi)的(de)環(huan)境(jing)中(zhong)時(shi)。F12中含有硫酸亞鐵,據報道也有神經毒效應。
zaisuoyouzhexiepeiyangjizhong,guansuanbiqitaanjisuanyougenggaodenongdu,zheshiyinweitajuyoubuwendingxingyijizaixuduoxibaopeiyangzhongtachangyongzuotanyuan。duiyushenjingyuandepeiyangchangchangzaijichupeiyangjizhongzengjiaputaotangdehanliangdao0.6%或者加入丙酮酸(若培養基中這兩種物質缺乏時)。MEM與F12均要用5%的CO2來平衡,DMEM含更高濃度的NaCO3,要用10%的CO2來平衡,當然也可以在較低CO2濃nong度du下xia使shi用yong。這zhe些xie基ji礎chu培pei養yang基ji的de組zu成cheng成cheng分fen是shi建jian立li在zai對dui不bu同tong細xi胞bao係xi生sheng長chang的de研yan究jiu之zhi上shang的de,但dan通tong常chang在zai原yuan代dai培pei養yang中zhong使shi用yong也ye能neng有you比bi較jiao令ling人ren滿man意yi的de結jie果guo。
原則上,HEPES作為緩衝劑可用來代替碳酸氫鹽,以解除需要高濃度CO2培養環境的限製。實際操作中並非如此簡單。顯然,溶解的CO2與碳酸氫鹽對良好的細胞生長是重要的。Leiboviz`s L15培養基可用來在大氣環境中令神經細胞生長,該培養基采用了與眾不同的BSS作基礎,它含有高濃度的氨基酸來提高緩衝能力,培養基中使用半乳糖作碳源,以阻止培養基中乳酸形成,少量溶解的CO2由丙酮酸代謝產生。這一培養基的優點是明顯的,特別是在保持較高CO2有困難時,例如在長時間的顯微操作及生理學研究中。L15培養基已用來成功的培養了外周神經元,但尚未在CNS神經元的發育研究中全麵檢測過。
血清
細(xi)胞(bao)在(zai)單(dan)純(chun)的(de)基(ji)礎(chu)培(pei)養(yang)基(ji)中(zhong)不(bu)能(neng)存(cun)活(huo),在(zai)特(te)殊(shu)類(lei)型(xing)的(de)細(xi)胞(bao)培(pei)養(yang)中(zhong)必(bi)須(xu)提(ti)供(gong)某(mou)些(xie)痕(hen)量(liang)營(ying)養(yang)物(wu)質(zhi)及(ji)生(sheng)長(chang)因(yin)子(zi)才(cai)能(neng)使(shi)細(xi)胞(bao)得(de)以(yi)生(sheng)長(chang)並(bing)維(wei)持(chi)生(sheng)長(chang)狀(zhuang)態(tai)。基(ji)礎(chu)培(pei)養(yang)基(ji)常(chang)常(chang)要(yao)添(tian)加(jia)血(xue)清(qing),血(xue)清(qing)終(zhong)濃(nong)度(du)多(duo)為(wei)5~20%。teshuyongtudexueqinglaiyuanxuyongjingyanqueding,guangfanyingyongdexueqingzhongleiyoumaxueqingyutainiuxueqing。tainiuxueqingzhongfuhanyousifenlieyinzi,changxuanqizuozengzhixibaoyongdexueqing,yeyongyuxibaoxiheyuandaipeiyang。ermaxueqingchangchangyonglaizuoyousifenliehoudeshenjingyuanpeiyang。raner,henduorenyejiangtainiuxueqingyongyushenjingyuanpeiyang,yeyourenyongmaxueqinglaipeiyangjiaozhixibao。yongdashujinxingshenjingyuanpeiyangdemouxieyanjiuzhexihuanshiyongtongxingxueqing;人類的胎盤血清,亦曾用於神經組織的器官類型的培養,也用在一些特殊培養種類中。
血xue清qing的de不bu同tong批pi號hao含han有you不bu同tong的de成cheng分fen,所suo以yi許xu多duo人ren發fa現xian,應ying該gai在zai使shi用yong前qian對dui血xue清qing進jin行xing測ce試shi。大da多duo數shu試shi劑ji商shang提ti供gong樣yang品pin,所suo滿man意yi的de批pi號hao即ji可ke選xuan用yong,這zhe樣yang可ke以yi一yi次ci得de到dao足zu夠gou一yi年nian用yong量liang的de血xue清qing,血xue清qing在zai使shi用yong前qian通tong常chang在zai56℃加熱30分鍾,這一過程稱為滅活。
無血清培養基
1979nianshenjingxibaopeiyangchuxianleyigezhongyaojinzhan,yonghuaxuetianjiajijikeweichishenjingxibaocunhuoyushengchangerbuxuyaozaipeiyangjizhongtianjiaxueqing。qigongzuojichushiyongheshidejisu、營養物和促貼壁的物質的組合置換培養基中的成分,最後找到了適合大多數細胞培養的試劑配方,該配方稱為N2,專門用於神經細胞培養,最早是用在B104大鼠神經母細胞瘤細胞係的培養。它的基礎培養基是1:1的DMEM與H12的混合液,添加了胰島素、轉鐵蛋白、黃體酮、腐(fu)胺(an)和(he)硒(xi)。胰(yi)島(dao)素(su)和(he)胰(yi)島(dao)素(su)樣(yang)生(sheng)長(chang)因(yin)子(zi)對(dui)於(yu)大(da)多(duo)數(shu)類(lei)型(xing)細(xi)胞(bao)的(de)存(cun)活(huo)和(he)生(sheng)長(chang)有(you)重(zhong)要(yao)作(zuo)用(yong),硒(xi)是(shi)穀(gu)胱(guang)甘(gan)肽(tai)產(chan)生(sheng)的(de)合(he)作(zuo)因(yin)子(zi),可(ke)能(neng)有(you)助(zhu)於(yu)過(guo)氧(yang)化(hua)物(wu)和(he)超(chao)氧(yang)化(hua)物(wu)的(de)水(shui)解(jie),有(you)報(bao)道(dao)說(shuo)還(hai)能(neng)防(fang)止(zhi)細(xi)胞(bao)的(de)光(guang)照(zhao)損(sun)傷(shang)。隨(sui)後(hou)的(de)其(qi)他(ta)配(pei)方(fang)如(ru)N1N3則含有較低濃度的轉鐵蛋白。
未wei料liao到dao的de是shi上shang述shu配pei方fang構gou成cheng的de培pei養yang基ji可ke以yi支zhi持chi神shen經jing母mu細xi胞bao瘤liu細xi胞bao係xi快kuai速su增zeng殖zhi,隨sui後hou又you發fa展zhan了le能neng支zhi持chi原yuan代dai培pei養yang的de各ge種zhong神shen經jing元yuan生sheng長chang的de培pei養yang基ji,這zhe種zhong培pei養yang基ji在zai許xu多duo實shi驗yan室shi裏li已yi取qu代dai了le有you血xue清qing培pei養yang。在zai某mou些xie培pei養yang方fang案an中zhong,細xi胞bao直zhi接jie進jin入ru無wu血xue清qing培pei養yang,這zhe樣yang的de培pei養yang基ji可ke以yi消xiao除chu來lai自zi血xue清qing的de不bu均jun一yi性xing。更geng為wei重zhong要yao的de是shi,它ta們men可ke用yong來lai檢jian測ce生sheng長chang因yin子zi以yi及ji其qi他ta促cu進jin神shen經jing元yuan存cun活huo或huo生sheng長chang的de因yin子zi,或huo者zhe用yong來lai檢jian測ce那na些xie可ke保bao護hu神shen經jing元yuan免mian遭zao環huan境jing毒du物wu損sun傷shang的de製zhi劑ji。專zhuan用yong於yu神shen經jing元yuan的de培pei養yang基ji在zai某mou些xie培pei養yang環huan境jing中zhong還hai可ke以yi減jian低di非fei神shen經jing元yuan細xi胞bao的de增zeng殖zhi,故gu可ke使shi神shen經jing元yuan純chun化hua。
血xue清qing中zhong含han有you的de組zu分fen,例li如ru血xue清qing蛋dan白bai,可ke作zuo為wei代dai謝xie毒du物wu清qing除chu劑ji使shi用yong並bing能neng聚ju集ji於yu培pei養yang基ji中zhong。當dang缺que乏fa這zhe些xie成cheng分fen時shi,如ru神shen經jing元yuan在zai無wu血xue清qing培pei養yang基ji中zhong生sheng長chang時shi,特te別bie容rong易yi為wei過guo氧yang化hua物wu及ji自zi由you基ji傷shang害hai,這zhe已yi被bei許xu多duo研yan究jiu者zhe注zhu意yi到dao了le。過guo氧yang化hua物wu酶mei以yi及ji超chao氧yang化hua物wu歧qi化hua酶mei可ke阻zu止zhi培pei養yang基ji中zhong過guo氧yang化hua物wu和he超chao氧yang化hua物wu的de累lei積ji,有you報bao道dao講jiang可ke以yi促cu進jin低di密mi度du培pei養yang細xi胞bao的de存cun活huo。有you學xue者zhe發fa現xian細xi胞bao存cun活huo可ke為wei氧yang分fen壓ya的de下xia降jiang而er促cu進jin。因yin而er,無wu血xue清qing培pei養yang基ji的de配pei方fang常chang含han有you抗kang氧yang化hua劑ji的de試shi劑ji。例li如ru,維wei生sheng素suE和(he)丙(bing)酮(tong)酸(suan),可(ke)作(zuo)為(wei)過(guo)氧(yang)化(hua)物(wu)清(qing)除(chu)劑(ji)使(shi)用(yong)。上(shang)述(shu)這(zhe)些(xie)影(ying)響(xiang)在(zai)高(gao)密(mi)度(du)培(pei)養(yang)時(shi)變(bian)小(xiao),特(te)別(bie)是(shi)神(shen)經(jing)元(yuan)與(yu)膠(jiao)質(zhi)共(gong)培(pei)養(yang)時(shi),它(ta)們(men)可(ke)以(yi)吸(xi)收(shou)和(he)代(dai)謝(xie)神(shen)經(jing)元(yuan)毒(du)性(xing)物(wu)質(zhi)如(ru)穀(gu)氨(an)酸(suan)。
應ying該gai注zhu意yi,盡jin管guan無wu血xue清qing培pei養yang基ji是shi有you化hua學xue限xian定ding性xing的de,但dan在zai培pei養yang過guo程cheng中zhong它ta仍reng有you變bian動dong,培pei養yang起qi始shi時shi可ke能neng有you些xie物wu質zhi缺que乏fa,而er後hou細xi胞bao的de產chan物wu可ke能neng積ji累lei,從cong而er使shi培pei養yang基ji的de成cheng分fen改gai變bian。這zhe其qi實shi是shi有you另ling一yi方fang麵mian的de好hao處chu,即ji條tiao件jian培pei養yang基ji(已培養過細胞的培養基)的形成,條件培養基常常用來增加神經元和膠質細胞的發育。
shengchangyinzijuedaduoshuburuleipeitaishenjingyuanyouyangedeyingyangyaoqiu,ruobunengtigongshiyideshengchangyinzihuoheshideyinzizufen,jianghuishijuedaduoshushenjingyuanzaitiwaipeiyangdeshutianzhongsiwang。jiejuezheyiwentiyouliangtiaosilu,yishirangpeiyangxibaotigongzijideyingyangyinzi,ershizaipeiyangjizhongjiaruchundeshengchangyinzi。ruguoxibaohunhewunengzaigaomidushishengchang,suoxudeshengchangyinzibianhuijileidaokeguandeshuzhi,youqidangpeiyangjihenshaobianhuashi。ruomouzhongxibaohunhewushengchangshiyouhenshaodeyingyangxuqiu,kebaochipeiyangjizaiyiduanshijianlibuzuorenhebiandong,yishiyingyang(生長)因子積累,而最後促使所需要的細胞類型能夠生長。但是,這種對營養(生長)yinzizishenyilaixingyiyoubiduan,yinweitongchangzaihunhexibaoquntizhongxibaohennanyoutongbilizengzhi,mouxiexibaohuiyinshengchangtiaojiandepinfaershouxianzhi。lingwai,zhezhongfangfazhinengjinxingxiangdanggaomidudexibaopeiyang。yinweipeiyangjidetiaojianzaixibaodejiaodimidushibiandebugouyouxiao。buguomouxieshihouchunhuashenjingyuanquntidedimidupeiyangkeyongtiaojianpeiyangji(經過了高密度培養)進行,或在膠質上生長的神經元所用過的培養基來支持。
滿足神經元營養需求的第二條途徑是向培養基中加入生長因子。通常用於組培的通用適宜因子是神經生長因子NGF。不過,隻有少數對這種蛋白質有反應的細胞類型的細胞才能生長。
許多PNS類型的神經元在離體狀態時表現出簡單的營養需求,隻需提供單一的營養因子就足以使其在低密度時增殖。例如,大鼠交感神經元僅需NGF即能存活,在其生存期間,這些神經元可在嚴格局限條件下生長好幾個月(即在無血清培養基中、或缺乏膠質細胞、或在化學限定基質上)。有證據表明NGF是活體中交感神經元存活的生理調節因子。然而,交感神經元也對來自膠質細胞的神經營養因子(GDNF)有反應,還有NT3、LIF與CNTF也對其有作用。在不產生GDNF或NT3的動物中,交感神經元會有損傷。在離體與活體營養需求之間的差別或許可以用在不同環境中NGF含量和分布的不同來解釋,培養中的NGF彌散在整個環境中,而在活體內,大部分區域的含量是有限的。因此,NGF的de重zhong要yao性xing在zai於yu其qi合he適shi的de濃nong度du。盡jin管guan在zai大da多duo數shu實shi驗yan中zhong已yi經jing習xi慣guan了le營ying養yang因yin子zi的de最zui大da效xiao應ying使shi用yong量liang,其qi他ta營ying養yang因yin子zi的de協xie同tong效xiao應ying在zai亞ya優you劑ji量liang下xia更geng容rong易yi觀guan察cha到dao。此ci外wai,高gao濃nong度du的de營ying養yang因yin子zi可ke使shi細xi胞bao更geng能neng抵di抗kang毒du劑ji以yi及ji其qi他ta壓ya力li。相xiang應ying的de,低di濃nong度du的de營ying養yang因yin子zi可ke能neng用yong來lai檢jian查zha表biao現xian型xing,例li如ru對dui自zi由you基ji或huo氨an基ji酸suan的de毒du性xing刺ci激ji劑ji量liang的de反fan應ying。有you許xu多duo其qi他ta的dePNSpeiyangxitongzhixudanyiyingyangyinzijiukeshiyoushiyongjiazhidexibaobaochizaiyidingbili,guangweirenzhideyouchujijiezhuangzizhushenjingjieshenjingyuanhedashubeigenshenjingjieganjiaoshenjingyuan。buguo,zhexiemoxingyeyoujuxianxing。liru,peiyangzhongdejiezhuangshenjingjiedeshenjingyuanjiaruCNTF時,超過90%的神經元能存活一個很長時期,但並未有跡象表明它屬於內源的靶細胞來源的營養因子,而是有爭論的相關分子,GPA,扮演了這一角色。大鼠背根神經節含有好幾種細胞群體,其中小細胞群、包括nocioceptive cell,對NGF有反應,但其他神經元,例如大細胞群中的proprioception 卻對不同的神經營養因子有反應。因此,在大多條件下培養物的生長並不能忠實反映親代群體的所有特性,這一問題在CNS的細胞培養中特別突出,因為已有的經驗表明,沒有一種培養基能適合於所有類型及亞類的神經細胞的生長。
現有的證據已表明,CNS神經元的營養需求比PNS的de更geng複fu雜za。對dui脊ji髓sui運yun動dong神shen經jing元yuan與yu視shi網wang膜mo節jie細xi胞bao神shen經jing元yuan的de研yan究jiu表biao明ming,這zhe些xie神shen經jing元yuan與yu外wai周zhou神shen經jing元yuan相xiang比bi能neng對dui更geng為wei廣guang泛fan的de營ying養yang因yin子zi起qi反fan應ying。例li如ru,至zhi少shao發fa現xian了le15種不同的分子可在離體條件下增加神經元的存活。而且,已觀察到運動神經元與視網膜對任何單獨的營養因子的存活反應,與PNSzhongsuoguanchadaodedianxingfanyingxiangbi,douyaoxiaodeduo。yinci,daduoshuyingxiangyundongshenjingyuanjishiwangmojiexibaodeyingyangyinzijinjinzhinengzhichishenjingyuandeyaqun,ershenjingyuandezuijiacunhuoyaoqiuzhuduoyinzidejiehe。zaishiwangmojiexibaodepeiyangzhong,yinzidezuijiazuhe(如BDNF、CNTF、IGF、bFGF)包括了來自不同生長因子家族的代表。這一結果的普遍性尚待進一步的證實,但敲除單一的營養因子基因之後,沒有表現出對CNS大(da)多(duo)類(lei)群(qun)的(de)神(shen)經(jing)元(yuan)的(de)存(cun)活(huo)產(chan)生(sheng)太(tai)大(da)影(ying)響(xiang),這(zhe)一(yi)觀(guan)察(cha)與(yu)上(shang)述(shu)的(de)事(shi)實(shi)是(shi)一(yi)致(zhi)的(de)。現(xian)已(yi)知(zhi)少(shao)突(tu)膠(jiao)質(zhi)細(xi)胞(bao)的(de)長(chang)期(qi)存(cun)活(huo)也(ye)需(xu)要(yao)眾(zhong)多(duo)營(ying)養(yang)因(yin)子(zi)的(de)相(xiang)互(hu)作(zuo)用(yong)。
抗生素
在細胞培養中最常用的抗生素是青黴素(常用濃度是25~100ui/ml)與鏈黴素(25~100μg/ml)。這兩種抗生素常混合使用。在一些實驗室裏,它們常規加入所有的培養基中。慶大黴素(10~100μg/ml)tongchangyouguangpukangjunxiaoying,bingjuyourongyewendingxing,guyebeiyixieshiyanshishiyong,tebieshidangyoudishuipingdewurancunzaishigengshizheyang。yishangzhexieshijiduimeijunyujiaomujundewuranjunwuxiao。
jinguanhenduoshiyanshizaixibaoxidepeiyangjizhongchangguijiarukangshengsuzuojidaipeiyang,danrengjianyibuyaozaiyuandaipeiyangzhongjiarukangshengsu,qiliyouzhiyishihuodedexibaoshiwujunde,yuandaipeiyangshidexijunwuranhenshaofasheng。qici,jinguanrenweikangshengsuduixibaodaixiedeyingxiangkehulve,danzuihaobimianshiyongtamen,yimianxibaoshengchanghuanjingdebuwending。zuizhongyaodeshiyaoyishidaopeiyangzhongzhuyaowuranwudeleixing,tamentongchanganshilewentidelaiyuan。
抗有絲分裂劑
某些DNA合成抑製劑對分裂細胞有毒,但對沒有DNA合成的細胞僅有輕微影響。由於神經元通常缺乏DNAhechengnengli,yinciduikangyousifenliejimeiyouduodafanying。zheyangdeshijichangchangyongyushenjingyuandepeiyang,yixiaochuhuojianshaofeishenjingyuanqunti。ruoyaoshasisuoyoudefeishenjingyuanxibao,keyixianjiaruxueqinghuoshengchangyinzilaibaozhengyougaobilidefeishenjingyuanxibaojinxingDNA合(he)成(cheng),此(ci)時(shi)再(zai)加(jia)入(ru)抗(kang)有(you)絲(si)分(fen)裂(lie)劑(ji)。但(dan)是(shi),某(mou)些(xie)細(xi)胞(bao)在(zai)它(ta)的(de)細(xi)胞(bao)周(zhou)期(qi)的(de)某(mou)些(xie)時(shi)相(xiang)時(shi)對(dui)抗(kang)有(you)絲(si)分(fen)裂(lie)劑(ji)是(shi)不(bu)敏(min)感(gan)的(de)。不(bu)過(guo),可(ke)以(yi)重(zhong)複(fu)的(de)將(jiang)抗(kang)有(you)絲(si)分(fen)裂(lie)劑(ji)使(shi)用(yong)於(yu)增(zeng)殖(zhi)的(de)細(xi)胞(bao)群(qun)體(ti)。在(zai)CNS神經元的培養中抗有絲分裂劑常常在星形細胞形成單層後加入,此時,星形細胞由於接觸抑製而終止了DNA的合成(即細胞停止增殖),它(ta)們(men)不(bu)會(hui)因(yin)抗(kang)有(you)絲(si)分(fen)裂(lie)劑(ji)的(de)加(jia)入(ru)而(er)死(si)亡(wang)。原(yuan)代(dai)培(pei)養(yang)中(zhong)用(yong)這(zhe)種(zhong)方(fang)法(fa)阻(zu)止(zhi)成(cheng)纖(xian)維(wei)細(xi)胞(bao)的(de)過(guo)度(du)增(zeng)殖(zhi)是(shi)十(shi)分(fen)必(bi)要(yao)的(de)。有(you)兩(liang)種(zhong)抗(kang)有(you)絲(si)分(fen)裂(lie)劑(ji)常(chang)用(yong)於(yu)神(shen)經(jing)元(yuan)的(de)培(pei)養(yang):Fluorodexyuridine,是胸苷合成酶抑製劑,一般使用濃度為~10μM。尿苷(10μM)也常使用,可阻止不分裂細胞的RNA合成。另外,阿糖胞苷也常被使用,其使用濃度為5~50μM。使shi用yong任ren何he一yi種zhong抗kang有you絲si分fen裂lie劑ji,都dou必bi須xu考kao慮lv它ta的de神shen經jing原yuan毒du性xing,應ying該gai確que定ding最zui低di效xiao應ying的de使shi用yong濃nong度du。阿e糖tang胞bao苷gan在zai很hen低di的de濃nong度du下xia,也ye會hui對dui某mou些xie種zhong類lei的de神shen經jing元yuan有you毒du性xing,可ke以yi造zao成cheng特te定ding神shen經jing原yuan的de死si亡wang。其qi他ta的de抗kang有you絲si分fen裂lie劑ji尚shang未wei表biao現xian出chu這zhe種zhong毒du性xing。
培養的保持
培養物是應該保持在孵箱中的。孵箱可以自動將O2與CO2hunhehenkuaidadaopeiyangjideshejiyaoqiu,kongqizhongdeyangnongdubixueyehenaojiyezhongyaogaodeduo。duiyumouxiexibaodeshengchang,baokuoshenjingyuan,yingshiyanghanliangchuzaiyigejiaodideshuiping。keyiyongfuxiangdadaozhegebiaozhun,danzheyangdefuxiangbingweiguangfanshiyong。
gaoshidukebimianpeiyangminzhongpeiyangjidezhengfa,baochifuxiangzhongdeshidutongchangshizaixiangdibufangshangyidapenshui,zheshuiyinggaijingchanghuan,chengshuirongqiyingjingchangxiaoduyifangmeijunshengchang。ruofuxiangzengbeimeijunbaoziyanzhongwuranguo,nameyaoxiangwanquanquchuwuranzehuifeichangkunnan。dangpeiyangwubixuyaochangqibaochizaifuxiangzhongshi,yingcaiyongjiaoshaopeiyangjideping、皿,且將蓋子蓋緊以避免蒸發,或采用相應的按比例供空氣的孵箱。
溫度的精確調節應定期檢查,孵箱溫度常設置為37℃或較低溫度。細胞在低溫時可有較長時間的忍耐限度,但當溫度升至39℃時,幾小時內即死亡。
weichipeiyangwudezuijiafanganchangchanggaibian。lirupeiyangjiaozhixibaoshi,yaojingchanghuanyeyishiqizengzhidadaozuida。erzaipeiyangmouxieshenjingyuanshi,zeyaoqiujinkenengshaodehuanye,shenjingyuanzailiangcihuanyezhijiandetiaojianxiachangdezuihao。danaopizhidepeiyangyaoqiuzaibuhuanyedeqingxingxiaweichiyigeyueyishang。lingyifangmian,xianghaimashenjingyuannayangdexibao,yilaiyutiaojianpeiyangji,ruohuanyetaipinfanxibaojiuhuishuaitui,cishi,kecaiyong1/3或1/2換液的方式。
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