组蛋白A（小牛胸腺）

组蛋白A（小牛胸腺）/Histones,dried(Calf thymus) BR 250毫克 sigma 9064-47-5 2～8℃
  1克 sigma 
中文名称： 组蛋白A（小牛胸腺）     
英文名称： Histones,dried(Calf thymus)     
产品规格： BR     
组蛋白A（小牛胸腺）包装： 250毫克/1克    
CAS号：9064-47-5    
级别：BR    
产品描述：An ethanol dried powder.Unfractionated mixture of histones.Histones are characterized by gel electrophoresis and solubility.Soluble in physiological saline,phosphate buffered saline(PBS)pH7.1,or water when pHis adjusted to neutural.     
性状：白色粉末    
用途：生化研究。一般认为其作为结构支持体的作用比其基因调节作用更为重要。    
保存：2～8°C    
含量为99.98%～100.02%。
保质期：三年以内
组蛋白A（小牛胸腺）运输形式：快递、邮政、汽运、空运等运输
健康危害：吞咽有害。造成皮肤刺激。造成严重眼刺激。可能引起呼吸道刺激。
侵入途径：经口、经皮、吸入
急救措施：
1）皮肤接触：立即脱去污染的衣着，用大量流动清水冲洗 20～30 分钟。如有不适感，就医。
2）眼睛接触：立即提起眼睑，用大量流动清水或生理盐水彻底冲洗10～15分钟。如有不适感，就医。
3）吸入：迅速脱离现场至空气新鲜处。保持呼吸道通畅。如呼吸困难，给输氧。呼吸、心跳停止，立即进行心肺复苏术。
就医。
4）食入：饮水，禁止催吐。如有不适感，就医。
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为了达到准确的实验结果，取用试剂时应遵守以下规则，以保证试剂不受污染和不变质：
(1)试剂不能与手接触。
(2)要用洁净的药勺，量筒或滴管取用试剂，绝对不准用同一种工具同时连续取用多种试剂。取完一种试剂后，应将工具洗净（药勺要擦干）后，方可取用另一种试剂。
(3)试剂取用后一定要将瓶塞盖紧，不可放错瓶盖和滴管，绝不允许张冠李戴，用完后将瓶放回原处。
(4)已取出的试剂不能再放回原试剂瓶内。
另外取用组蛋白A（小牛胸腺）时应本着节约精神，尽可能少用，这样既便于操作和仔细观察现象，又能得到较好的实验结果。