1·Any of a group of microorganisms of the genus chlamydia that are obligate intracellular parasites and include the causative agents of trachoma psittacosis and lymphogranuloma venereum.
衣原体属微生物，贝宗（氏）体属微生物一种衣原体属微生物群，是一种专性细胞内的寄生虫，包括颗粒性结膜炎、鹦鹉病、淋巴肉芽肿的病原体。
2·Anaplasma ovis is an arthropod-borne rickettsial obligate parasite of sheep and goat. The disease caused by a.
绵羊无浆体病是绵羊和山羊红细胞内专性寄生的由节肢动物传播的立克氏体疾病。
3·Viruses are obligate intracellular parasites.
病毒是专性的细胞内寄生物。
4·Besides, bifidobacterium can produce a marked effect on cancer gene therapy because of its obligate anaerobic character.
此外，双歧杆菌专性厌氧的特性使其在肿瘤的基因治疗中起重要的作用。