Shigella sp.

志贺氏菌属（shigella）

志贺氏菌属（ shigella ）是一类革兰氏阴性杆菌，是人类细菌性痢疾最为常见的病原菌，通称痢疾杆菌。大小为 0.5 ～ 0.7 × 2 ～ 3 μ m ，无芽胞，无荚膜，无鞭毛。多数有菌毛。革兰氏阴性杆菌。兼性厌氧菌，能在普通培养基上生长，形成中等大小，半透明的光滑型菌落。在肠道杆菌选择性培养基上形成无色菌落。分解葡萄糖，产酸不产气。 vp 试验阴性，不分解尿素，不形成硫化氢，不能利用枸橼酸盐作为碳源。宋内氏志贺氏菌能迟缓发酵乳糖（ 37 ℃ 3 ～

Polymerase Chain Reaction Detection of Invasive Shigella and Salmonella enterica in Food

The ability to detect Shigella in foods is often hampered by the often-low numbers of organisms present in the sample at the time of analysis. At present, a reliable, time-efficient, and highly sensitive protocol to isolate Shigella

Coffee (Coffea sp.)

Coffee (Coffea sp.) is a perennial plant widely cultivated in many tropical countries. It is a cash crop for millions of small farmers in these areas. As compared with other tree species, coffee has long breeding cycles that make conventional