Answer:

typeab

Answer	Crossword Clue
TYPEAB	Rare blood
TYPEAB	Rare blood classification
TYPEAB	Red Cross need

TYPEAB	Uncommon blood
TYPEAB	Rare medical classification
TYPEAB	Blood group
TYPEAB	Like universal blood recipients
TYPEAB	Uncommon blood variety
TYPEAB	It has two antigens
TYPEAB	Rare blood label
TYPEAB	Universal recipient blood designation

TYPEAB	Uncommon blood designation
TYPEAB	Rare blood designation
TYPEAB	Blood designation
TYPEAB	Category at some banks
TYPEAB	Universal recipient designation
TYPEAB	Like a universal recipient
TYPEAB	Blood category
TYPEAB	Category for cross-matching

TYPEAB	Alternative to O
TYPEAB	Universal recipient's category
TYPEAB	Like universal recipients