²é¿´: 15560  |  »Ø¸´: 8

³Ô»õ°Ñ×ÓÈâ

½ð³æ (СÓÐÃûÆø)

[ÇóÖú] DNAÌáȡʱ260/280±ÈֵΪʲô×ÜÊÇÆ«µÍ£¿

ÎÒÓÃÌì¸ùµÄÊÔ¼ÁºÐÌáÈ¡DNAʱ260/230±ÈÖµ×ÜÊDZȽϵͣ¬ÊµÑé²Ù×÷ÖÐÓ¦µ±×¢Òâʲô£¿¸÷λ´óÄÜÖ¸µãÒ»ÏÂ
»Ø¸´´ËÂ¥

» ²ÂÄãϲ»¶

» ±¾Ö÷ÌâÏà¹ØÉ̼ÒÍÆ¼ö: (ÎÒÒ²ÒªÔÚÕâÀïÍÆ¹ã)

» ±¾Ö÷ÌâÏà¹Ø¼ÛÖµÌùÍÆ¼ö£¬¶ÔÄúͬÑùÓаïÖú:

ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

changes

ľ³æ (ÕýʽдÊÖ)

¡ï ¡ï
gyesang: ½ð±Ò+2, ¹ÄÀø»ØÌûÓ¦Öú£¡ 2013-07-25 10:20:02
260/230±ÈÖµ½ÏµÍ£¿µÍµ½Ê²Ã´³Ì¶È£¿¿ÉÄÜÊǵ°°×È¥³ýµÄ²»³¹µ×£¬»òÕßÏ´ÍÑÒºÖÐÀë×ÓŨ¶È½Ï¸ß°É¡£

¼ÈÈ»ÊÇÊÔ¼ÁºÐ£¬»¹ÊÇÎÊÌì¸ùµÄ¼¼ÊõÖ§³Ö°É¡£

ûÓÐÓùýÕâÖÖºÐ×Ó¡£
2Â¥2013-07-24 21:33:01
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

³Ô»õ°Ñ×ÓÈâ

½ð³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
2Â¥: Originally posted by changes at 2013-07-24 21:33:01
260/230±ÈÖµ½ÏµÍ£¿µÍµ½Ê²Ã´³Ì¶È£¿¿ÉÄÜÊǵ°°×È¥³ýµÄ²»³¹µ×£¬»òÕßÏ´ÍÑÒºÖÐÀë×ÓŨ¶È½Ï¸ß°É¡£

¼ÈÈ»ÊÇÊÔ¼ÁºÐ£¬»¹ÊÇÎÊÌì¸ùµÄ¼¼ÊõÖ§³Ö°É¡£

ûÓÐÓùýÕâÖÖºÐ×Ó¡£

1.7×óÓÒ£¬×îµÍµÄʱºòÊÇ1.2£¬ÆäËûͬʶ¼ÌáµÄͦºÃ£¬¾ÍÎҵIJ»ÐУ¬Ò²Ã»ÕÒµ½Ô­Òò
3Â¥2013-07-25 08:07:59
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

¹Â³ÇһƬ

ľ³æ (СÓÐÃûÆø)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
³Ô»õ°Ñ×ÓÈâ(gyesang´ú·¢): ½ð±Ò+1, ¹ÄÀø»ØÌûÓ¦Öú£¡ 2013-07-25 10:20:12
³Ô»õ°Ñ×ÓÈâ: ½ð±Ò+1, ¡ïÓаïÖú 2013-07-25 10:27:21
ÓÃͬÊµķ½·¨ÌáÒ»´Î£¬ÊÔÊÔ¿´²»¾ÍÐÐÁË£¬Ò»°ãÀ´Ëµ£¬µÍÕâô¶àÓ¦¸ÃÊÇÓе°°×ÎÛȾ£¬Åܸö´ø´«¸öÍ¼ÇÆÇÆ
±¾Òâ̽»¨ÀÉ£¬ÄκÎÜÆÈôÏ㣻¼ÄÒâÓèÇལ¬¹²ãåºÃó¸¹â¡£
4Â¥2013-07-25 08:40:22
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

longrna

гæ (ÕýʽдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï ¡ï ¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
³Ô»õ°Ñ×ÓÈâ(gyesang´ú·¢): ½ð±Ò+1, ¹ÄÀø»ØÌûÓ¦Öú£¡ 2013-07-25 10:20:23
³Ô»õ°Ñ×ÓÈâ: ½ð±Ò+2, ¡ïÓаïÖú 2013-07-25 10:27:13
ÀÏʵ˵260/230Ö»Òª²»ÊÇʵÑéÒªÇóºÜ¹ý·Ö£¬»òÕßÄãºóÐøÊµÑé¶ÔÑÎÀë×Ó²»ÊÇÄÇÖַdz£ÌرðºÜÊ®·ÖÃô¸ÐµÄ»°£¬²»Ó°Ïì¡£
ÁíÍ⣬1.2»ò1.7ÆäʵÒѾ­ÊDz»´íµÄÁË¡£¸öÈËÈÏΪ²»±Ø´µÃ«Çó´Ã¡£
ΰ´óº½Ïß....
5Â¥2013-07-25 09:22:42
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

biomed_fanyi

гæ (³õÈëÎÄ̳)


Õâ¸öratioµÍ˵Ã÷µ°°×ÎÛȾ¶àÁË
¿ÉÒÔ¿¼ÂÇϵ°°×denatureÄDz½ÊDz»Êdzä·ÖÁË£¬

´ÓÄĶùÌ᣿´ÓE coliÀï̫̾?
ÓеÄÖÊÁ£À©ÔöÆðÀ´yield±È½ÏµÍ£¬Ò²µ¼ÖÂÕâ¸öratio»áµÍ¡£ÄãͬÊÂÌáµÄºÍÄãÌáµÄͬһ¸öÖÊÁ£Ã´£¿²»Êǵϰ£¬Ò²¿ÉÒÔ¿¼ÂǶàҡЩ¾ú

ÔÙ¾ÍÊÇÄãµÄÓÃ;ÊÇʲô£¿Õâ¸öratio¶Ô×öתȾ¿ÉÄÜ»áÓÐÓ°Ïì¡£µ«ÊÇ×ö¿Ë¡µÄ»°ÎÊÌâ²»´ó
6Â¥2013-07-25 11:20:55
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

·¼·¼ÔÚ¿¼ÑÐ

Òø³æ (СÓÐÃûÆø)

´¿¶ÈºÃµÄDNA»òRNA£¬ÔÚpH7-8.5 ÏÂA260 / A280µÄ±ÈÖµÓ¦¸ÃÔÚ2.0 »ò2.5¡£ ´¿¾»µÄÑùÆ·±ÈÖµ´óÓÚ1.8£¨DNA£©»òÕß2.0£¨RNA£©¡£Èç¹û±ÈÖµµÍÓÚ1.8 »òÕß2.0£¬±íʾ´æÔÚµ°°×ÖÊ»òÕß·ÓÀàÎïÖʵÄÓ°Ïì¡£A230±íʾÑùÆ·ÖдæÔÚһЩÎÛȾÎÈç̼ˮ»¯ºÏÎï¡¢ÑΣ¨ëÒÑΣ©µÈ£¬½Ï´¿¾»µÄºËËáA260/A230µÄ±ÈÖµ´óÓÚ2.0 ¡£
ŬÁ¦¡£¡£¡£
7Â¥2013-07-25 16:35:44
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

tellman12

½û³æ (³õÈëÎÄ̳)

±¾ÌûÄÚÈݱ»ÆÁ±Î

8Â¥2013-07-29 09:48:02
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

northspring

гæ (³õÈëÎÄ̳)

Äã²â¶¨ODÖµÊÇÓÃʲôϡÊÍRNAµÄ£¬Èç¹ûÓÃË®£¬¾Í»áºÜµÍ£»ÒªÊÇÓÃ10mMOL tris-cl£¬¾Í»áÔÚ1.8-2.2Ö®¼ä¡£ºÃºÃ²é¿´ÄãµÄprotoctol¡£ÊÇÓÃʲô·½·¨ÌáµÄ£¿
9Â¥2014-01-19 05:25:27
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ ³Ô»õ°Ñ×ÓÈâ µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] ÉúÎïѧѧ˶Çóµ÷¼Á +4 СÑò˯×ÅÁË? 2026-03-23 4/200 2026-03-23 21:42 by hyzs6688
[¿¼ÑÐ] Ò»Ö¾Ô¸211 ³õÊÔ270·Ö Çóµ÷¼Á +4 ¹ÈÓêÉϰ¶ 2026-03-23 5/250 2026-03-23 21:18 by ²»»ó¿ÉÀÖ
[¿¼ÑÐ] Ò»Ö¾Ô¸ÖØÇì´óѧ085700×ÊÔ´Óë»·¾³£¬×Ü·Ö308Çóµ÷¼Á +7 īīĮ 2026-03-23 8/400 2026-03-23 20:36 by Creta
[¿¼ÑÐ] »¯Ñ§308·ÖÇóµ÷¼Á +3 ÄãºÃÃ÷ÌìÄãºÃ 2026-03-23 3/150 2026-03-23 20:11 by macy2011
[¿¼ÑÐ] Ò»Ö¾Ô¸ÉÂʦ´óÉúÎïѧ071000£¬298·Ö£¬Çóµ÷¼Á +3 SYA£¡ 2026-03-23 3/150 2026-03-23 19:09 by macy2011
[¿¼ÑÐ] ¿¼Ñл¯Ñ§308·ÖÇóµ÷¼Á +7 ÄãºÃÃ÷ÌìÄãºÃ 2026-03-23 8/400 2026-03-23 18:39 by macy2011
[¿¼ÑÐ] 291 Çóµ÷¼Á +4 »¯¹¤2026½ì±ÏÒµÉ 2026-03-21 5/250 2026-03-23 16:46 by »¯¹¤2026½ì±ÏÒµÉ
[¿¼ÑÐ] 316Çóµ÷¼Á +7 ÁºÜçö© 2026-03-19 7/350 2026-03-23 16:21 by lingjue
[¿¼ÑÐ] ÕÐ08¿¼Êýѧ +6 laoshidan 2026-03-20 14/700 2026-03-23 14:37 by 15614359529
[¿¼ÑÐ] Çóµ÷¼Á²ÄÁÏѧ˶080500£¬×Ü·Ö289·Ö 5+3 @taotao 2026-03-19 21/1050 2026-03-23 10:17 by ¹Úc¸ç
[¿¼ÑÐ] Çóµ÷¼ÁԺУÐÅÏ¢ +6 CX 330 2026-03-21 6/300 2026-03-22 15:25 by ÎÞи¿É»÷111
[¿¼ÑÐ] Çóµ÷¼Á +5 Zhangbod 2026-03-21 7/350 2026-03-22 13:13 by Zhangbod
[¿¼ÑÐ] 085600²ÄÁÏÓ뻯¹¤306 +4 z1z2z3879 2026-03-21 4/200 2026-03-21 23:44 by ms629
[¿¼ÑÐ] ²ÄÁÏѧ˶301·ÖÇóµ÷¼Á +7 Liyouyumairs 2026-03-21 7/350 2026-03-21 22:31 by peike
[¿¼ÑÐ] Ò»Ö¾Ô¸Éî´ó£¬0703»¯Ñ§£¬×Ü·Ö302£¬Çóµ÷¼Á +4 ÆßÔÂ-ÆßÆß 2026-03-21 4/200 2026-03-21 18:20 by ѧԱ8dgXkO
[¿¼ÑÐ] 0805²ÄÁÏ320Çóµ÷¼Á +3 ÉÎïÓï 2026-03-20 3/150 2026-03-21 15:46 by Î޼ʵIJÝÔ­
[¿¼ÑÐ] 265Çóµ÷¼Á +3 Jack?k?y 2026-03-17 3/150 2026-03-21 03:17 by JourneyLucky
[¿¼ÑÐ] Ò»Ö¾Ô¸»ªÖпƼ¼´óѧ£¬080502£¬354·ÖÇóµ÷¼Á +5 ÊØºòϦÑôCF 2026-03-18 5/250 2026-03-21 01:06 by JourneyLucky
[¿¼ÑÐ] ²ÄÁÏѧÇóµ÷¼Á +4 Stella_Yao 2026-03-20 4/200 2026-03-20 20:28 by ms629
[¿¼ÑÐ] ±¾¿ÆÖ£ÖÝ´óѧÎïÀíѧԺ£¬Ò»Ö¾Ô¸»ª¿Æ070200ѧ˶£¬346Çóµ÷¼Á +4 ÎÒ²»ÊÇÒ»¸ù´Ð 2026-03-18 4/200 2026-03-19 09:11 by ¸¡ÔÆ166
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û