blood_group has definitions from the field of immunology
1
[ noun ] (immunology) people whose blood (usually just the red blood cells) has the same antigens

Synonyms

blood_type

Used in print

(M. Yokoyama et al., "Chemical and serological...)

A variety of techniques have been directed toward the isolation and study of blood_group antibodies .

Speer and coworkers , in a similar study of blood_group antibodies of whole sera , used a series of gradients for elution from DEAE-cellulose .

The insoluble material which precipitated during dialysis against starting_buffer always showed intense agglutinin activity , regardless of the blood_group of the donor .

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