blood temperament or disposition; "a person of hot blood"
antiserum blood serum containing antibodies against specific antigens; provides immunity to a disease
serum albumin albumin occurring in blood serum; serves to maintain the somatic pressure of the blood
serum globulin globulins occurring in blood serum and containing most of the antibodies of the blood
opsonin an antibody in blood serum that attaches to invading microorganisms and other antigens to make them more susceptible to the action of phagocytes