blood transfusion 
noun
An injection of a volume of blood, previously taken from a healthy person, into a patient: surgeons gave the boy a blood transfusion [mass noun]: the patient did not require blood transfusion...
- In severe cases of B12-deficiency anaemia, a blood transfusion may be required.
- There is cause for concern any time a patient receives a blood transfusion.
- Doctors have ruled out surgery or a blood transfusion as a cause.
- at every turn
- ATF
- at fault
- at first
- at first blush
- at first glance
- at first hand
- at first instance
- at first sight
- (at) full blast
- at full cock
- service mark
- service member
- service module
- service pack
- service provider
- servicer
- service road
- service star
- service station
- service stripe
- service tree
- servicewoman
- serviette
- servigerous