| 白喉毒素 | bái hóu dú sù | diphtheria toxin | 
| 白 | Bái | surname Bai | 
| 白 | bái | white / snowy / pure / bright / empty / blank / plain / clear / to make clear / in vain / gratuitous / free of charge / reactionary / anti-communist / funeral / to stare coldly / to write wrong character / to state / to explain / vernacular / spoken lines in opera | 
| 白喉 | bái hóu | diphtheria | 
| 喉 | hóu | throat / larynx | 
| 毒 | dú | poison / to poison / poisonous / malicious / cruel / fierce / narcotics | 
| 毒素 | dú sù | toxin / (fig.) pernicious influence | 
| 素 | sù | raw silk / white / plain, unadorned / vegetarian (food) / essence / nature / element / constituent / usually / always / ever |