词根词缀：bacillo-, bacill-, bacilli-

【来源及含义】Latin: rod, staff, stick; a rod-shaped bacterium

【同源单词】actinobacillosis, actinobacillus, bacillar, bacillary, bacillemia, bacillicide

词根词缀：strepto-, strepsi-

【来源及含义】Greek: a twisting, to twist; easily bent or twisted, like a chain

【同源单词】streptobacilli, streptococcal, streptococci, streptococcicide, Streptococcus, streptodermatitis