By dissecting moribund fishes and isolationg the pathogens, we found that the “infection syndrome” was a complex polyinfection caused by Myxosporea and secondary bacterial infection.
对多个养殖场的患鱼体进行解剖观察及
离鉴
,发现
多是由粘孢子虫寄生并继发细菌性感染而引起的疾
。
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Examples of those genetic defenses include the protections (at a price) that the sickle-cell gene, Tay-Sachs gene, and cystic fibrosis gene may confer on African blacks, Ashkenazi Jews, and northern Europeans against malaria, tuberculosis, and bacterial diarrheas, respectively.
这些基因防御的例子包括镰状细胞基因、泰萨克斯基因和囊性纤维化基因可能赋予非洲黑人、德系犹太人和北欧人抵抗疟疾、结核病和细菌性腹泻的保护(有代价),分别。