someone's (own) flesh and blood

US /ˈsʌm.wʌnz oʊn flɛʃ ænd blʌd/
UK /ˈsʌm.wʌnz oʊn flɛʃ ænd blʌd/
"someone's (own) flesh and blood" picture
1.

propia sangre, familiares cercanos

a person's close relatives, especially their children

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How could you treat your own flesh and blood like that?
¿Cómo pudiste tratar así a tu propia sangre?
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She would do anything for her flesh and blood.
Ella haría cualquier cosa por su propia sangre.
:
flesh and bloodbe in someone's bloodfleshbe after someone's bloodsomeone's blood is upbloodmake someone's blood boil