be flesh and blood

be somebody's (own) flesh and blood

to be someone's relative How can you be so cruel to him when he's your own flesh and blood?
See also: and, blood, flesh
References in periodicals archive ?
The strange thing is that one of the accomplices who I consider to be flesh and blood had spent 18 years in the UK with a degree in immunology and herbal medicine and had added an honourable title of 'Doctor' to his name