항원이 · 항원을
antigen
Example
신속 항원 검사는 결과가 빨리 나와요.
Rapid antigen tests give results quickly.
Word parts
항 resist+원 origin
Literally 'what the resistance originates from' — it triggers antibodies.
Good to know
Easy to mix up: 항원 is the invader (antigen), 항체 is your defense (antibody).
Related words