1
,Contents
📝 Chapter 1: Introduction to Immunity and the Immune System ............................................3
📝 Chapter 2: Innate Immunity ............................................................................................... 14
📝 Chapter 3: Nature of Antigens and the Maʝor Histocompatibility Complex (MHC) ........... 26
📝 Chapter 4. Adaptive Immunity .............................................................................................. 38
📝 Chapter 5: Antibody Structure and Function ..................................................................... 50
📝 Chapter 6: Cytokines .......................................................................................................... 61
📝 Chapter 7: The Complement System .................................................................................. 73
📝 Chapter 8: Safety and Quality Management ....................................................................... 84
📝 Chapter 9: Principles of Serological Testing ....................................................................... 96
📝 Chapter 10. Precipitation and Agglutination Reactions ........................................................ 108
📝 Chapter 11. Labeled Immunoassays .................................................................................... 120
📝 Chapter 12. Molecular Diagnostic Techniques ..................................................................... 132
📝 Chapter 13: Flow Cytometry and Laboratory Automation .................................................... 144
📝 Chapter 14: Hypersensitivity............................................................................................... 155
📝 Chapter 15: Autoimmunity ................................................................................................. 167
📝 Chapter 16: Transplantation Immunology ........................................................................... 178
📝 Chapter 17: Tumor Immunology ......................................................................................... 187
📝 Chapter 18: Immunoproliferative Diseases.......................................................................... 197
📝 Chapter 19: Immunodeficiency Diseases ............................................................................. 206
📝 Chapter 20. Serological and Molecular Detection of Bacterial Infections .............................. 219
📝 Chapter 21: Spirochete Diseases ......................................................................................... 231
📝 Chapter 22: Serological and Molecular Diagnosis of Parasitic and Fungal Infections ............. 235
📝 Chapter 23: Serology and Molecular Detection of Viral Infections ................................... 247
📝 Chapter 24: Laboratory Diagnosis of HIV Infection ......................................................... 258
📝 Chapter 25: Immunization and Vaccines .......................................................................... 269
2
,📝 Chapter 1: Introduction to Immunity and the Immune System
Question 1:
Which of the following best describes the primary role of the immune
system?
A. To produce hormones and regulate metabolism
B. To provide physical support to tissues
C. To defend the body against infectious agents and other foreign substances
D. To supply oxygen and nutrients to tissues
✅ Correct Answer: C
💡 Rationale: The immune system functions primarily to recognize,
respond to, and eliminate foreign pathogens, including bacteria, viruses,
fungi, and parasites, as well as abnormal host cells such as cancer cells.
Question 2:
Which of the following is a characteristic of the innate immune system?
A. Memory response upon second exposure
B. Antigen-specific activation
C. Rapid, non-specific response
D. Clonal selection of lymphocytes
✅ Correct Answer: C
💡 Rationale: The innate immune system provides an immediate response
to pathogens using non-specific mechanisms, unlike the adaptive system
which is specific and involves memory.
Question 3:
Which immune system component bridges innate and adaptive immunity?
A. Macrophages
3
, B. Dendritic cells
C. B lymphocytes
D. Plasma cells
✅ Correct Answer: B
💡 Rationale: Dendritic cells act as antigen-presenting cells (APCs) that
capture antigens via innate pathways and present them to T cells, thereby
linking innate and adaptive immunity.
Question 4:
Which of the following is not considered a first line of defense in immunity?
A. Intact skin
B. Mucous membranes
C. Phagocytic leukocytes
D. Lysozyme in saliva
✅ Correct Answer: C
💡 Rationale: Phagocytic leukocytes (like neutrophils and macrophages)
are part of the second line of defense (innate immunity). First-line defenses
include physical and chemical barriers.
Question 5:
The maʝor cells involved in humoral immunity are:
A. Macrophages
B. Natural killer (NK) cells
C. B lymphocytes
D. Dendritic cells
✅ Correct Answer: C
💡 Rationale: B lymphocytes are responsible for humoral immunity
through the production of antibodies that circulate in bodily fluids.
4
,Contents
📝 Chapter 1: Introduction to Immunity and the Immune System ............................................3
📝 Chapter 2: Innate Immunity ............................................................................................... 14
📝 Chapter 3: Nature of Antigens and the Maʝor Histocompatibility Complex (MHC) ........... 26
📝 Chapter 4. Adaptive Immunity .............................................................................................. 38
📝 Chapter 5: Antibody Structure and Function ..................................................................... 50
📝 Chapter 6: Cytokines .......................................................................................................... 61
📝 Chapter 7: The Complement System .................................................................................. 73
📝 Chapter 8: Safety and Quality Management ....................................................................... 84
📝 Chapter 9: Principles of Serological Testing ....................................................................... 96
📝 Chapter 10. Precipitation and Agglutination Reactions ........................................................ 108
📝 Chapter 11. Labeled Immunoassays .................................................................................... 120
📝 Chapter 12. Molecular Diagnostic Techniques ..................................................................... 132
📝 Chapter 13: Flow Cytometry and Laboratory Automation .................................................... 144
📝 Chapter 14: Hypersensitivity............................................................................................... 155
📝 Chapter 15: Autoimmunity ................................................................................................. 167
📝 Chapter 16: Transplantation Immunology ........................................................................... 178
📝 Chapter 17: Tumor Immunology ......................................................................................... 187
📝 Chapter 18: Immunoproliferative Diseases.......................................................................... 197
📝 Chapter 19: Immunodeficiency Diseases ............................................................................. 206
📝 Chapter 20. Serological and Molecular Detection of Bacterial Infections .............................. 219
📝 Chapter 21: Spirochete Diseases ......................................................................................... 231
📝 Chapter 22: Serological and Molecular Diagnosis of Parasitic and Fungal Infections ............. 235
📝 Chapter 23: Serology and Molecular Detection of Viral Infections ................................... 247
📝 Chapter 24: Laboratory Diagnosis of HIV Infection ......................................................... 258
📝 Chapter 25: Immunization and Vaccines .......................................................................... 269
2
,📝 Chapter 1: Introduction to Immunity and the Immune System
Question 1:
Which of the following best describes the primary role of the immune
system?
A. To produce hormones and regulate metabolism
B. To provide physical support to tissues
C. To defend the body against infectious agents and other foreign substances
D. To supply oxygen and nutrients to tissues
✅ Correct Answer: C
💡 Rationale: The immune system functions primarily to recognize,
respond to, and eliminate foreign pathogens, including bacteria, viruses,
fungi, and parasites, as well as abnormal host cells such as cancer cells.
Question 2:
Which of the following is a characteristic of the innate immune system?
A. Memory response upon second exposure
B. Antigen-specific activation
C. Rapid, non-specific response
D. Clonal selection of lymphocytes
✅ Correct Answer: C
💡 Rationale: The innate immune system provides an immediate response
to pathogens using non-specific mechanisms, unlike the adaptive system
which is specific and involves memory.
Question 3:
Which immune system component bridges innate and adaptive immunity?
A. Macrophages
3
, B. Dendritic cells
C. B lymphocytes
D. Plasma cells
✅ Correct Answer: B
💡 Rationale: Dendritic cells act as antigen-presenting cells (APCs) that
capture antigens via innate pathways and present them to T cells, thereby
linking innate and adaptive immunity.
Question 4:
Which of the following is not considered a first line of defense in immunity?
A. Intact skin
B. Mucous membranes
C. Phagocytic leukocytes
D. Lysozyme in saliva
✅ Correct Answer: C
💡 Rationale: Phagocytic leukocytes (like neutrophils and macrophages)
are part of the second line of defense (innate immunity). First-line defenses
include physical and chemical barriers.
Question 5:
The maʝor cells involved in humoral immunity are:
A. Macrophages
B. Natural killer (NK) cells
C. B lymphocytes
D. Dendritic cells
✅ Correct Answer: C
💡 Rationale: B lymphocytes are responsible for humoral immunity
through the production of antibodies that circulate in bodily fluids.
4
