人类临床B组链球菌色素产生的特征及发生率
Characterization and incidence of pigment production by human clinical group B streptococci.
作者信息
Merritt K, Jacobs N J
出版信息
J Clin Microbiol. 1978 Jul;8(1):105-7. doi: 10.1128/jcm.8.1.105-107.1978.
Abstract
Pigment was produced in stab cultures by 97% of 297 group B streptococci isolated from human clinical specimens. The pigment, which was associated with a membranous cell fraction, showed a four-banded absorption spectrum similar to that of a carotenoid, with maxima at 435, 566, 485, and 525 nm. Addition of glucose to the growth medium suppressed pigment production in most strains. Only 37% of strains from bovine sources produced pigment.
摘要
从人类临床标本中分离出的297株B组链球菌中，97%在穿刺培养中产生色素。该色素与细胞膜部分相关，呈现出与类胡萝卜素相似的四带吸收光谱，最大吸收峰分别在435、566、485和525纳米处。在生长培养基中添加葡萄糖可抑制大多数菌株产生色素。来自牛源的菌株中只有37%产生色素。
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