Answer: T-cells lymphocytes
B-cells
phagocytes
The immune response can be defined as the response that is generated by the immune system against an active foreign agent. The antigens of the body get activated to produce numerous antibodies which fight against the foreign agent and prevent it from causing disease symptoms. The immune response generate during pathogenic infection, allergies, graft or organ rejections.
T lymphocytes are specialized type of white blood cells. They are developed from the stem cells of the bone marrow. They help in protection of the body from the infection against foreign agent and prevents the development of tumor, hence fights against cancer.
B cells are the type of white blood cells which are capable of producing antibodies hence, they generate immune response.
Phagocytes are the specialized cells which engulf foreign agents such as bacteria, dust particles and others capable of causing diseases and allergies and provide immunity to the organism.