oxoid CM0854-BLOOD AGAR BASE （SHEEP）原装现货

名称：BLOOD AGAR BASE （SHEEP）
货号：oxoid CM0854
规格：500g
产品说明：
BLOOD AGAR BASE （SHEEP）
Code: CM0854
Description
Sheep Blood Agar Base was developed to meet the demand for an especially nutritious blood agar base which would permit the maximum recovery of organisms without interfering with their haemolytic reactions when used with sheep blood. Sheep Blood Agar Base is based on the formulation of Blood Agar Base No.2 CM0271.
Blood Agar Base No.2 when supplemented with sheep blood was occasionally found to result in a mixed haemolytic reaction （alpha and beta haemolysis） for some Group A Streptococci （Streptococcus pyogenes）. These mixed haemolytic reactions were due to trace amounts of fermentable carbohydrates in yeast extract and the physiological differences of sheep blood when compared to horse blood1.
Having identified the causes of the mixed haemolytic reactions, the Sheep Blood Agar Base was formulated to be compatible with sheep blood. Comparisons with other blood agar bases supplemented with sheep blood have shown that with Sheep Blood Agar Base the growth of many bacteria - especially the fastidious streptococci - is considerably improved, and the expected beta haemolytic reaction is achieved with Streptococcus pyogenes.
Storage conditions and Shelf life
Store the dehydrated medium at 10-30°C and use before the expiry date on the label.
Store the prepared medium at 2-8°C.
Appearance
Dehydrated medium: Straw-coloured, free-flowing powder
Prepared medium: Straw-coloured gel