Question

is a protein found in blood that is represented by a + or - sign, which affects the ood with other blood types. rhesus factor antigen (anti) antibody (anti)

Explanation:

The Rhesus factor is a protein in blood. A positive or negative sign indicates its presence or absence and affects blood - compatibility with other types. Antigens are substances that can trigger an immune response and are not specifically the protein indicated here. Antibodies are part of the immune system's response and not the protein represented by + or - in blood type context.

Answer:

Rhesus factor