RICKETTSIA
\ɹɪkˈɛtsi͡ə], \ɹɪkˈɛtsiə], \ɹ_ɪ_k_ˈɛ_t_s_iə]\
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A genus of gram-negative, aerobic, rod-shaped bacteria often surrounded by a protein microcapsular layer and slime layer. The natural cycle of its organisms generally involves a vertebrate and an invertebrate host. Species of the genus are the etiological agents of human diseases, such as typhus.
By DataStellar Co., Ltd
Word of the day
Snake's-head
- Guinea-hen flower; -- so called in England because its spotted petals resemble the scales of a snake's head.